Arthur, age 32, loses his job in a corporate downsizing. As a
result of his termination, he receives a distribution of the
balance in his § 401(k) account of $20,000 ($25,000 − $5,000
Federal income tax withholding) on May 1, 2018. Arthur's marginal
tax rate is 24%. a. What effect will the distribution have on
Arthur’s gross income and tax liability if he invests the $20,000
received in a mutual fund? b. Same as part (a) except that Arthur
invests...