M, D, T and W are sitting around a circle facing at the centre. Who is to the immediate left of D?
I. M is between T and W and D is to the immediate left of T.
II. D is second to the left of M.

Options

A. the data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question,
B. the data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question,
C. the data either in statement I alone or in statement II alone are sufficient to answer the question,
D. the data given in both statements I and II together are not sufficient to answer the question,

Explanation

To solve the problem of determining who is to the immediate left of D based on the given statements, we can follow these steps:

### Step 1: Analyze Statement I
- The first statement tells us that M is between T and W, and D is to the immediate left of T.
- Let's visualize this:
- If we place M between T and W, we can have two possible arrangements:
1. T - M - W
2. W - M - T
- Since D is to the immediate left of T, we can place D accordingly:
- If T is at position 1, then D will be at position 4 (immediate left).
- If W is at position 1, then D will be at position 2 (immediate left).

However, since M is between T and W, the only valid arrangement is:
- T - M - W
- D must be at position 4 (immediate left of T).

### Step 2: Determine Who is to the Immediate Left of D
- In the arrangement T - M - W - D, we see that W is to the immediate left of D.

### Conclusion from Statement I
- From Statement I alone, we can conclude that W is to the immediate left of D.

### Step 3: Analyze Statement II
- The second statement states that D is second to the left of M.
- Let's visualize this:
- If we place M at any position, D being second to the left means:
- If M is at position 1, D will be at position 3.
- If M is at position 2, D will be at position 4.
- If M is at position 3, D will be at position 1.
- If M is at position 4, D will be at position 2.

- In all these arrangements, we cannot definitively determine who is to the immediate left of D since T and W can occupy any of the remaining positions.

### Conclusion from Statement II
- From Statement II alone, we cannot determine who is to the immediate left of D.

### Final Conclusion
- Based on the analysis:
- Statement I alone is sufficient to answer the question (W is to the immediate left of D).
- Statement II alone is not sufficient to answer the question.