need help solving this problem. I dont get it . Thanks!

Mr. Remling is entitled to a $5,200 bonus this year (year O). His employer gives him two options. He can either receive his $5,200 bonus in cash, or the employer will credit him with $4,500 deferred compensation. Under the deferral option, the employer will accrue 6 percent annual interest on the deferred compensation. Consequently, the employer will pay $8,059 ($4,500 plus compounded interest) to Mr. Remling when he retires in year 10. In making your calculations, use a 5 percent discount rate. Use Arpendix A. a-1. Compute NPV assuming Mr. Remling's current marginal tax rate is 32 percent, and his marginal tax rate at retirement will be 12 percent. a-2. In order to maximize the NPV, which option should Mr. Remling accept? b.1. Compute NPV assuming Mr. Remling's current marginal tax rate is 32 percent, and his marginal tax rate at retirement will be 32 percent. b-2. In order to maximize the NPV, which option should Mr. Remling accept? Complete this question by entering your answers in the tabs below. Reg A1 Reg A2 Req B1 Req B2 Compute NPV assuming Mr. Remling's current marginal tax rate is 32 percent, and his marginal tax rate at retirement will be 12 percent. (Round your intermediate computations and final answers to the nearest whole dollar amount.) NPV of the current compensation NPV of the deferred compensation Reg A2 >