The intSales array is declared as follows: Dim intSales() As Integer = {10000, 12000, 900, 500, 20000}. Which of the following If clauses determines whether the intSub variable contains a valid subscript for the array?

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Question:
The intSales array is declared as follows: Dim intSales() As Integer = {10000, 12000, 900, 500, 20000}. Which of the following If clauses determines whether the intSub variable contains a valid subscript for the array?

1.If intSales(intSub) >= 0 AndAlso intSales(intSub) < 4 Then

2.If intSales(intSub) >= 0 AndAlso intSales(intSub) <= 4 Then

3.If intSub >= 0 AndAlso intSub < 4 Then

4.If intSub >= 0 AndAlso intSub <= 4 Then

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