4. A person borrowed $1000 from Bank A,$1000 from Bank B and $1000 from Bsm The nominal annual interest rate of all 3 banks are the same: 10%,compounded monthly. For Bank A, he needs to pay the all principal and interest at the end of 5 years. For Bank B, he needs to pay the interest at the end of every month, and pay the principle at the end of 5 years. For Bank C, he needs to pay 10 equal payments at the end of each 6 -month period. Calculate the total amount of interest he paid to all 3 banks