A S10 000, 10.5% bonds with quarterly coupons is redeemable at par on August 1, 2025. a) Find the cash price five years before maturity if the market rate is 10.5% compounded quarterly. b) Find the cash price two years before maturity if the market rate is 8.5%, compounded quarterly. c) Find the cash price 23 months before maturity if the market rate is 8.5%, compounded quarterly.