What type of ethical dilemma does each of the following illustrate?

(A situation might involve more than one dilemma.)

a. Due to a corporate merger, an advertising agency suddenly finds itself representing rival companies.

b. A newly hired employee learns that the office manager plays computer games on company time.

c. An employee is asked to destroy documents that implicate his or her company in widespread pollution.

d. A company spokesperson agrees to give a press conference that puts a positive spin on his or her company's lack of overseas factory monitoring and questionable treatment of labor.