(单选题, )
下面代码的执行结果是（ ）

(单选题, )
下面代码的执行结果是（ ）
>>> x = "Happy Birthday to you!"
>>> x * 3

A.系统报错

B.Happy Birthday to you!

C.Happy Birthday to you!Happy Birthday to you!Happy Birthday to you!'

D.Happy Birthday to you! Happy Birthday to you! Happy Birthday to you!

正确答案是C

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