Refer to the weighted voting system 
and the Banzhaf definition of power. (The four players are P1, P2, P3 and P4.)Which players are critical in the coalition {P1, P2, P3, P4}?
A. P1 only
B. All of the players
C. P1 and P2 only
D. P1, P2 and P3 only
E. None of the players
Answer: A
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