Essentials of Economics 7th Edition by Gregory Mankiw

تمرين 2

The price of coffee rose sharply last month, while the quantity sold remained the same. Each of five people suggests an explanation:

Who could possibly be right?
A) Tom, Dick, and Harry
B) Tom, Dick, and Mary
C) Tom, Harry, and Mary
D) Dick, Harry, and Larry
E) Dick, Harry, and Mary