WHY HAVE SOME COLLECTORS TAKEN TO PHILATELIC INVESTMENT

2. - File thứ 1: Anh 11 giua ky 2
Tiếng Anh File thứ 1: Anh 11 giua ky 2

2. Why have some collectors taken to Philatelic investment? - Because they ________

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

B. have observed the generally rising prices of stamps.

C. haven't observed the generally rising prices of stamps.

D. have observed the generally low prices of stamps.