The marginal principle asserts that, in general, when net benefit is maximized?

AGREED BY EXPERTS...........................................

C

-----------------------------

Thanks

I CHOOSE C NUMBER ..............................................................................

1. The marginal principle asserts that, in general, when net benefit is maximized The correct answer was: c. marginal benefit will be equal to marginal cost.. marginal benefit will be equal to marginal cost. 

The answer is : Option ( C )

C...........................................

My answer is also option (C)