In the indicated voting system, the weights represent, in order, voters A, B, C, and so on. Write out all of the winning coalitions.[16 : 1, 5, 7, 9]
A. {A, B, C, D}, {A, B, D}, {A, C, D}, {B, C, D}, {C, D}
B. {A, B, C, D}, {A, C, D}, {B, C, D}, {C, D}
C. {A, B, C, D}, {A, C, D}
D. {A, B, C, D}
Answer: B
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