Given the Weighted Voting System [6: 4, 3, 2, 1] $I \{ A , B \}$

Multiple Choice

Given the weighted voting system [6: 4, 3, 2, 1], which of the coalitions listed are winning coalitions?
$I \{ A , B \}$
II $\{ A , C \}$
III $\{ B , C , D \}$

A) I only
B) I and II
C) I and III
D) I, II, and III