Overseas Bank Is Pooling 50 Similar and Fully Amortized Mortgages

Multiple Choice

Overseas bank is pooling 50 similar and fully amortized mortgages into a pass-through security.The face value of each mortgage is $100,000 paying 180 monthly interest and principal payments at a fixed rate of 9 percent per annum. What is the monthly payment on the mortgage pass-through?

A) $37,500.
B) $45,231.
C) $45,309.
D) $50,713.
E) $55,256.