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
End Sub
```
a. 0
b. 20
c. 40
d. (cannot be determined)
a. 0
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