a. $400 per year for 10 years at 14%. $ b. $200 per year for 5 years at 7%. $ c. $400 per year for 5 years at 0\%. $ d. Now rework parts a,b, and c assuming that payments are made at the beginning of each year; that is, they are annuities due. Present value of $400 per year for 10 years at 14% : $ Present value of $200 per year for 5 years at 7% : $ Present value of $400 per year for 5 years at 0%:$ a. $400 per year for 10 years at 14%. $ b. $200 per year for 5 years at 7%. $ c. $400 per year for 5 years at 0\%. $ d. Now rework parts a,b, and c assuming that payments are made at the beginning of each year; that is, they are annuities due. Present value of $400 per year for 10 years at 14% : $ Present value of $200 per year for 5 years at 7% : $ Present value of $400 per year for 5 years at 0%:$