If We Were to Call the MakeDouble and ChangeArg Methods

If we were to call the MakeDouble and ChangeArg methods shown below, using the following statements, what value would be assigned to lblResult.Text?
Dim intValue As Integer = 20
ChangeArg(intValue)
LblResult.Text = MakeDouble(intValue) .ToString()

Function MakeDouble (ByVal intArg As Integer) As Integer
Return intArg * 2
End Function

Sub ChangeArg2(ByRef intArg As Integer)
' Display the value of intArg.
LstOutput.Items.Add(" ")
LstOutput.Items.Add("Inside the ChangeArg procedure, " &
"intArg is " & intArg.ToString() )
LstOutput.Items.Add("I will change the value of intArg.")
' Assign 0 to intArg.
IntArg = 0
' Display the value of intArg.
LstOutput.Items.Add("intArg is now " & intArg.ToString() )
LstOutput.Items.Add(" ")
End Sub

A) 0
B) 20
C) 40
D) (cannot be determined)