Five years ago, you saved $5,000 in bank A that pays a compounding interest rate. You also saved $7,500 in bank B that pays a simple interest rate. Both accounts have $10,000 now. How much will you have in the two accounts at the end of year 10?

a. The account balance in bank A will be $30,000. The account balance in bank B will be $15,000.

b. The account balance in bank A will be $40,000. The account balance in bank B will be $15,000.

c. The account balance in bank A will be $40,000. The account balance in bank B will be $20,000.