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

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

A. both are greater than 68
B. both are less than 68
C. one of them greater than 68
D. one of them less than 68







A.both are greater than 68
B.both are less than 68
C.one of them greater than 68
D.one of them less than 68


答案：B