[A]: Glycolysis occurs in the cytoplasm and converts some of the energy stored in glucose to ATP and NADH.
[R]: Glucose, in glycolysis is splitted into two molecules of 3-C compound.

Options

A. If both A and R are true and R is the correct explanation of A
B. If both A and R are true but R is not the correct explanation of A
C. If A is true and R is false
D. If both A and R are false

Answer

To solve the question, we need to analyze both the assertion and the reason provided:

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that "Glycolysis occurs in the cytoplasm and converts some of the energy stored in glucose to ATP and NADH."
- This is true. Glycolysis indeed takes place in the cytoplasm of the cell, and during this process, glucose is partially broken down to produce ATP and NADH.

2. **Understanding the Reason (R)**:
- The reason states that "Glucose, in glycolysis, is split into two molecules of a 3-C compound."
- This is also true. During glycolysis, one molecule of glucose (which is a 6-carbon compound) is split into two molecules of pyruvate (which are 3-carbon compounds).

3. **Evaluating the Relationship Between A and R**:
- We need to determine if the reason (R) correctly explains the assertion (A).
- While both statements are true, the reason does not explain how ATP and NADH are produced during glycolysis. It only describes one of the steps in the glycolysis pathway.

4. **Conclusion**:
- Since both the assertion and reason are true, but the reason does not provide a correct explanation for the assertion, the correct answer is:
- **Option 2**: Both assertion and reason are true, but reason is not the correct explanation of assertion.