单选题

已知t1=(2,3),t2=(4,5,6),那么t2+t1*2的结果是?

A

(2, 3, 2, 3, 4, 5, 6)

B

(4, 5, 6, 2, 3, 2, 3)

C

(2, 3, 4, 5, 6, 2, 3, 4, 5, 6)

D

(2, 3, 4, 5, 6)

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