明明要向mistakes.txt追加记错的单词，下列Python打开文件语句最合适的是？

第15565题单选题

明明要向mistakes.txt追加记错的单词，下列Python打开文件语句最合适的是？

A

f = open("mistakes.txt")

B

f = open("mistakes.txt","r")

C

f = open("mistakes.txt","a")

D

f = open("mistakes.txt","w")

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知识点：

Python基础-文件打开模式

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