The Ahmeds purchase a house for $140,000 by making a 25% down payment and borrowing the rest. They will make monthly payments for 15 years at 5.3% compounded monthly. After 11 years, they still owe $84,567 (rounded to the nearest dollar). How much equity do they have in the house if the house is now worth $190,000?
a. $105,433
b. $67,862.4
c. $64,352.16
d. $45,167.23
e. $127,108.38