单选题 窗体上画一个命令按钮，然后编写如下代码：
Private Type Record
ID As Integer
Name As String * 20
End Type
Private Sub command1 _ Click(
Open "c: /file. txt" for Input As
MaxSize = LOF (1)
for NextChar =MaxSize To Step-1
Seek #1, NextChar
MyChar=Input(1，#1)
Next NextChar
Print EOF(1)
Close #1
End Sub
程序运行后，单击命令按钮，其输出结果为______。
A) True B) False C) 0 D) Null