要对顺序文件进行写操作 下列打开文件语句中正确的是______。A.Openfile1.txt for Output As #1

要对顺序文件进行写操作，下列打开文件语句中正确的是______。

A．Open"file1.txt" for Output As #1

B．Open "file1.txt" for Input As #1

C．Open "file1. txt" for Random As #1

D．Open "file1. tx"，for Binary As #1