Consider following statement `:-`
`(A)` any physical quantity may have more one unit.
`(B)` Any physical quantity have only one dimensional formula
`(C )` More than one physical quantities may have same dimension.
`(D)` We can add & subtract only those expression having same dimension.
Number of correct statements is `:-`

Options

A. `4`
B. `3`
C. `2`
D. `1`

Explanation

To analyze the statements provided in the question, we will evaluate each statement one by one to determine their correctness.

### Step-by-Step Solution:

1. **Statement (A): Any physical quantity may have more than one unit.**
- This statement is **true**. A physical quantity can indeed have multiple units. For example, length can be measured in meters, centimeters, kilometers, etc. Thus, this statement is **correct**.

2. **Statement (B): Any physical quantity has only one dimensional formula.**
- This statement is **true**. Each physical quantity has a unique dimensional formula that expresses it in terms of the fundamental dimensions (mass, length, time, etc.). For example, the dimensional formula for force is [M^1 L^1 T^-2]. Therefore, this statement is also **correct**.

3. **Statement (C): More than one physical quantity may have the same dimension.**
- This statement is **true**. Different physical quantities can share the same dimensions. For instance, both work and energy have the same dimension of [M^1 L^2 T^-2]. Therefore, this statement is **correct**.

4. **Statement (D): We can add and subtract only those expressions having the same dimension.**
- This statement is **true**. In physics, we can only add or subtract quantities that have the same dimensions. For example, we cannot add length to time. Therefore, this statement is also **correct**.

### Conclusion:
- All four statements (A, B, C, D) have been evaluated.
- The number of correct statements is **4**.

### Final Answer:
The number of correct statements is **4**.