单选题

LEAGUE RESULTS Team Number of Games Won A 4 B 7 C 9 D 2 E 2 X

According to the incomplete table above, if each of the 6 teams in the league played each of the other teams exactly twice and there were no ties, how many games did team X win? (Only 2 teams play in a game.)
(A) 4 (B) 5 (C) 6 (D) 8 (E) 10