In 2019, Nina contributes 14 percent of her $111,000 annual salary to her 401(k) account. She expects to earn a 9 percent before-tax rate of return. Assuming she leaves this (and any employer contributions) in the account until she retires in 20 years, what is Nina's after-tax accumulation from her 2019 contributions to her 401(k) account? (UseTable 1,Table 2.)(Round your intermediate calculations and final answer to the nearest whole dollar amount.)

a.Assume Nina's marginal tax rate at retirement is 30 percent.

b.Assume Nina's marginal tax rateat retirement is 20 percent.

c.Assume Nina's marginal tax rate at retirement is 40 percent.