【单选题】

以下程序段：

Private Sub Form_Load( )
Dim Nop As Integer, Op As String * 1
Num1 = 3
Num2 = 2
Nop = val(Inputbox("请输入1-4之间的整数"))
Select Case Nop
Case 1
Op = "＋"
Result = Num1 + Num2
Case 2
Op = "－"
Result = Num1 - Num2
Case 3
Op = "×"
Result = Num1 * Num2
Case 4
Op = "÷"
Result = Num1 / Num2
End Select
Label1= Num1 & Op & Num2 & "=" & Result
End Sub
窗体运行后，输入4，则label1的标题显示结果为()
A.3+2=5
B.3-2=1
C.3×2=6
D.3÷2=1.5