HOBBIESTEST 1 MARK THE LETTER A, B, C OR D TO INDICATE THE WORD WHOSE...

33. Why have some collectors taken to Philatelic investment? – Because they ________

A. have observed the generally rising prices of stamps.

B. have observed the generally rising prices of rare stamps.

C. have observed the generally low prices of stamps.

D. haven’t observed the generally rising prices of stamps.