Cost of debt as a discount rate *** am I wrong here ***

We can improve the project npv by using the after tax cost of debt as the discount rate. if we finance the project with 100% debt, this discount is appropritate

Answer: incorrect statement: “The correct discount rate is the project required rate of return”

I don’t get the answer…

lets assume the cost of debt is 5% and taxes are 30

wouldn’t you want to discount the cash flows by the after tax cost of debt 5%???

this way… cash flows are after tax and discount rate is after tax???

Is there more to this question or was that it?

Is there any Project Specific risk factor is given .

****** SORRY GUYS!!! MY ORIGINAL ANSWER WAS CORRECT****

_We can improve the project npv by using the after tax cost of debt as the discount rate. if we finance the project with 100% debt, this discount is appropritate THIS IS A CORRECT STATEMENT _

_ SORRY FOR THE CONFUSIONG! _