单选题

在窗体上画一个命令按钮，名称为Command1。程序运行后，如果单击命令按钮，则显示一个输入对话框，在该对话框中输入一个整数，并用这个整数作为实参调用函数过程F1。在F1中判断所输入的整数是否是奇数，如果是奇数，过程F1返回1，否则返回0。能够正确实现上述功能的代码是

Question

A. Private Sub Command1_Click()
x=InputBox(“请输入整数”)
a=F1(Val(x))
Print a
End Sub

Function F1(ByRef b As Integer)
If b Mod 2=0 Then
Return 0
Else
Return 1
End If
End Function

B. Private Sub Command1_Click()
x=InputBox(“请输入整数”)
a=F1(Val(x))
Print a
End Sub

Function F1(ByRef b As Integer)
If b Mod 2=0 Then
F1=0
Else
F1=1
End If
End Function

C. Private Sub Command1_Click()
x=InputBox(“请输入整数”)
F1(Val(x))
Print a
End Sub

Function F1(ByRef b As Integer)
If b Mod 2=0 Then
F1=1
Else
F1=0
End If
End Function

D. Private Sub Command1_Click()
x=InputBox(“请输入整数”)
F1(Val(x))
Print a
End Sub

Function F1(ByRef b As Integer)
If b Mod 2=0 Then
Return 0
Else
Return 1
End If
End Function