What is the total amount paid (principal and interest) on a $300,000 15/15 interest only amortizing mortgage ( first 15 yers are interest only and second 15 years are fully amortizing) at 8% if the loan will be fully paid off by the end of the 30th year? Ignore the samll negative remaining balance.

A) $842,630

B) $745,398

C) $887,923

D) $928,346