`C_(P) - C_(V) = R`. This `R` is

Options

A. Change in `KE`.
B. Change in rotation energy
C. Work done which system can do on expanding the gas per mol per degree increases in temperature.
D. All correct

Explanation

To solve the question `C_(P) - C_(V) = R` and identify what `R` represents, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Terms**:
- \( C_P \) is the molar specific heat at constant pressure.
- \( C_V \) is the molar specific heat at constant volume.
- The equation \( C_P - C_V = R \) relates these specific heats to the universal gas constant \( R \).
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