The capital cost of project A is $20$ percent and the cash flows $($between $0$ and $5$ years$)$ are missing $2500,1000,1250,3800,3000,2500$ TL$.$ Accordingly,

A$)$ what is the net present value of the project?

B$)$ What is the internal efficiency ratio?

C$)$ How many years is the repayment period?

D$)$ What is the benefit cost ratio?