A director of a company is selected at random. C denotes the event that the director's annual salary is more than 300 000. C' denotes the event that the director's annual salary is not more than 300 000. D denotes the event that the director's annual salary is less than 200 000. E denotes the event that the director's annual salary is less than 350 000. Write down two of the events C, C', D and E which are

(a) complementary,

(b) mutually exclusive but not exhaustive,

(c) exhaustive but not mutually exclusive. (AEB)