An investment of $14,000 is growing at 4% compounded semi-annually. a. Calculate the accumulated amount at the end of year 1. O $14,856.91 O $14,280.00 O $14,565.60 O $15,142.40 b. If the interest rate changed to 5% compounded monthly at the end of year 1, calculate the future value at the end of year 4. O $33,178.15 O $16,260.61 O $29,712.18 $ 16,917.54 c. Calculate the total interest earned. O $2,917.54 O $565.60 O $15,712.18 O $19,178.15