单选题：Given the following game tree, if node **b** is pruned with α-β

Given the following game tree, if node **b** is pruned with α-β pruning algorithm, which of the following statements about the value of node **a** is correct? @[C](2)

A. greater than 65
B. less than 65
C. greater than 68
D. less than 68








A.greater than 65
B.less than 65
C.greater than 68
D.less than 68


答案：C