Required information Problem 13-60 (LO 13-2) (Algo) [The following information applies to the questions displayed below.] In 2022, Nina contributes 8 percent of her $187,000 annual salary to her 401(k) account. She expects to earn a 7 percent before-tax rate of return. Assuming she leaves this (and any employer contributions) in the account until she retires in 30 years, what is Nina's after-tax accumulation from her 2022 contributions to her 401(k) account? (Use Table 1. Table 2.) Note: Round your intermediate calculations and final answers to the nearest whole dollar amount. Problem 13-60 Part a (Algo) a. Assume Nina's marginal tax rate at retirement is 30 percent. b. Assume Nina's marginal tax rate at retirement is 20 percent. c. Assume Nina's marginal tax rate at retirement is 40 percent