在窗体上有一名为list1的列表框和名为Command1的命令按钮，要求程序运行后；如果单击命令按钮，则把列表框中所有的列表项目写到顺序文件list.txt 中。下列能完成该操作的程序是______。

A．Private Sub Command1_Click()
Open “c:\list.txt”For Input As #1
For i=0 To Listl.ListCount-1
Print #1，List1.List(i)
Next i
Close #1
End Sub
B．Private Sub Command1_lick()
Open “c:\list.txt”For Output As #1
For i=0 To List1.ListCount
Print #1，List1.List(i)
Next i
Close #1
End Sub
C．Private Sub Command1_Click()
Open “c:\list.txt”For Output As #1
For i=0 To List1.ListCount -1
Print #1，List1. List(i)
Next i
C1ese #1
End Sub
D．Private Sub Command1_Click()
Open “c:\list.txt”For As #1
For i=0 To List1.ListCount
Print #1，List1.List(i)
Next i
Close #1
End Sub