Find the present values of these ordinary annuities. Discounting occurs once a year. Do not round intermediate calculations. Round your answers to the nearest cent. a. $200 per year for 12 years at 12%. b. $100 per year for 6 years at 6%, c. $1,000 per year for 6 years at 0%. 5 d. Rework previous parts assuming they are annulties due. Present value of $200 per year for 12 years at 12%:$ Present value of $100 per year for 6 years at 6%:$ Present value of $1,000 per year for 6 years at 0% : \$