单选题

有如下 python 程序段:

a="Doing is better than saying ."

print(r"\n"+a[ :15])

该程序运行后,输出的结果是( )

A

直接输出:' \nDoing is better '

B

直接输出:\nDoing is better th

C

直接输出:\nDoing is better

D

先换行,然后在新的一行中输出:Doing is better

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