Select the function that represents the simple interest formula. O A. A(n) = P+(n-1);• P, where nis a positive integer
O B. A(n) = (n-1)(P.)", where n is any real number
O C. A(n) = P(1 + 1 - 1, where nis any real number
D. A(n) = n + (P-1);• P, where nis a positive integer

Which account has the highest effective annual interest rate? not necessary but show how you got your answer.a. account 1: interest is compounded quarterly at an annual rate of 4.20%.b. account 2: interest is compounded monthly at an annual rate of 4.15%.c. account 3: interest is compounded semiannually at an annual rate of 4.10%d. account 4: interest is compounded annually at a rate of 4.25%.