Solve the problem.In hockey, a defenseman's plus/minus record (+/- total) determines his success. If he is on the ice for a goal by the opposing team, he gets a -1. If he is on the ice for a goal by his team, he gets a +1. Suppose that over four games, a defenseman has +/- totals of +2, -1, -1, and +4. What is the player's average 
for the four games?
A. +3
B. -1
C. +1
D. 0
Answer: C
Mathematics
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