To find the interest of a weekly S70 investment in a bank account after 4 years, at 1.02% compounded weekly, the following plan should be used: a. 1) use the simple interest formula to find the interest earned b. 1) use the compound interest formula to find the total amount 2) subtract the total amount by $70 to find the interest earned c. 1) use the present value of an annuity formula to find the total amount 2) subtract the total by $70 x 4 x 52 to find the interest earned d. 1) use the future value of an annuity formula to find the total amount 2) subtract the total by $70 x 4 x 52 to find the interest earned e. none of the plans above is correct