Consider the Following Event Procedure That Calls a Function Procedure $= \mathrm { CDbl }$

Consider the following event procedure that calls a Function procedure named Cube, which returns the cube of a number.
Private Sub btnDisplay_Click(...) Handles btnDisplay.Click Dim nam, result As Double
num $= \mathrm { CDbl }$ (InputBox ("Enter a number to cube:") )
result $=$ Cube (nam)
txtBox. Text $=$ "The cube of $" \&$ num $\& "$ is $" \&$ result $\& " . "$
End Sub
Which of the following is a correct Function definition for Cube?
1. Function Cube (var As Double) As Double
Return var ^3
End Function
2. Function Cube (num As Double) As Double
Return num ^ 3
End Function

A) 1 only
B) 2 only
C) Both 1 and 2
D) Neither 1 nor 2