决定一个窗体有无控制菜单的属性是_____

A．Private Sub Command1_Click()
Dim B As Books
Open "c：\Person.txt" For Output As #1
B.Name=InpuBox(“输入姓名”)
B.TelNum=InputBox(“输入电话号码”)
Write #1，B.Name，B.TelNum
Close #1
End Sub
B．Private Sub Command1_ Click()
Dim B As Books
Open "c：\Person.txt" For Input As #1
B.Name=InputBox(“输入姓名”)
B.teLNum=InputBox(“输入电话号码”)
Ptint #1，B.Name，B.TelNum
Close #1
End Sub
C．Private Sub Command1_ Click()
Dim B As Books
Open "c：\Person.txt" For Output As #1
B.Name=InputBox(“输入姓名”)
B.TelNum=InputBox(“输入电话号码”)
Write #1，B
Close #1
End Sub
D．Private Sub Command1_ Click()
Dim B As Books
Open "c：\Person.txT" For Input As #1
Name=InputBox(“输入姓名”)
TelNum=InputBox(“输入电话号码”)
Print #1 Name. TelNum
Close #1
End Sub

决定一个窗体有无控制菜单的属性是______。