You Have a 15-Year Mortgage at an Annual Interest of 7.5

You have a 15-year mortgage at an annual interest of 7.5%. The initial loan amount was $160,000. By how much did the principal decrease over the first 5 years of the loan?

A) $35,047
B) $38,571
C) $43,221
D) $46,595
E) $37,914