Reggie wants to invest $10,000. His options are a. Gibraltar Corporation bonds with an annual interest rate of 8 percent. b. State of Hawaii bonds with an annual interest rate of 5 percent. c. Series EE savings bonds; a S10,000 investment will pay s14,300 in 5 years. 87. Assume that Zane is a 28 percent marginal tax rate payer, the time value of money mounts invested for 5 years. Which is 6 percent, and Zane intends t option will provide the greatest after-tax return, ignoring state income tax implica- tions? Would your answer change if Zane's marginal tax rate is 33 percent