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3. When the odd numbers are added successively, any finite sum will be a perfect square C.e frst few od What change must be made in the following program to correctly demonstrate this fac few od Private Sub btnDisplay_Click Handles btnDisplay t for the ck Dim oddNumber As Integer Dim sum As Integer0 For i As Integer = 1 To 9 Step 2 oddNumber i For j As Integer -1 To oddNumber Step 2 sum j Next 1stBox. Items. Add (sum & "is a perfect square." Next End Sub (A) Change the Step size to 1 in the first For statement (B) Move oddNumber = inside the second For loop. (C) Reset sum to zero immediately before the second Next statement. (D) Reset sum to zero immediately before the first Next statement 4. What does the following program do with a person's name? Private Sub btnDisplay_Click (.. .) Handles btnDisplay.Click Dim name, test As String Dim n As String"" name = InputBox ("Enter your first name:") For i As Integer = 0 To name. Length- 1 Step 2 test = name. Substring(1, 1) ntest &n Next txtBox. Text = n End Sub