What is the standard formula for calculating Basic Pay Earned (BPE) inside computerized accounting payroll modules?

1. A
   $\text{BPE}=\text{BP}\times \text{DA}$
2. B
   $\text{BPE}=\text{BP}\times \frac{\text{NODM}}{\text{NOEDP}}$
3. C
   $\text{BPE}=\text{BP}\times \frac{\text{NOEDP}}{\text{NODM}}$
4. D
   $\text{BPE}=\text{BP}+\text{DA}+\text{HRA}$