試題詳解

9. You and two friends are going to the movies and are going to one of three movies: A, B, or C. You prefer movie A to movie B and movie B to movic C. One of your friends prefers movie B to movie C and movie C to movie A. You other friend prefers movie C to movie A and movie A to movie B. The three of you decide to use majority rule voting to decide which movie you will see. If you first have a vote between movies A and B and then between the winner of that vote and movie C, then movie_________ will win. However, if you first vote between movies A and C and then between the winner of that vote and movie B, then movie _________ will win. This is an example of the_________ . 
(A) B； C； impossibility theorem
(B) C；B；voting paradox
(C) A； C； voting paradox
(D) A； B； majority rule voting