Each of the following employees works as a staff accountant at a regional tax return preparation firm. Which of the following employees likely can be legally terminated from work without notice?
a. A female employee who refused sexual advances and complained about made by her male supervisor and complained to her supervisor
b. A gay employee who refused sexual advances made by his gay male supervisor and complained to his supervisor
c. A 35-year-old employee whose supervisor was overheard saying that he had "grotesquely ugly bald head"
d. An employee who wears oversized, bright-colored shirts to work
e. An employee whose performance evaluations are excellent, but recently announced that she plans to leave the firm next fall to attend law school in another city
f. An employee whose performance evaluations are above average, but who has failed the Audit part of the Uniform CPA exam?