Find the future values of these ordinary annuities. Compounding occurs once a year. Do not round intermediate calculations. Round your answers to the nearest cent. a. $200 per year for 4 years at 12%. $ b. $100 per year for 2 years at 6%. $ c. $500 per year for 12 years at 0%. $ d. Rework parts a, b, and c assuming they are annuities due. Future value of $200 per year for 4 years at 12%: $ Future value of $100 per year for years at 6%: $ Future value of $500 per year for 12 years at 0%: $