(15 pts.) What is the future worth of each of the given series of payments? a. P 12,000.00 at the end of each six-month period for 12 years at 8% compounded semi- annually. b. P 8,000.00 at the end of each quarter for 6 years at 12% compounded quarterly. C. P6,000.00 at the end of each month for 5 years at 6% compounded monthly