单选题

执行如下代码

a=[1,2,3,4]

print(list(enumerate(a)))

运行结果是? ( )

A

((0, 1) , (1, 2) , (2, 3) , (3, 4) )

B

[(0, 1) , (1, 2) , (2, 3) , (3, 4) ]

C

[1, 2, 3, 4]

D

(1, 2, 3, 4)

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