After capturing the SelectedIndexChanged event for a ListBox control, you find that the event handler doesn’t execute. What could the problem be?

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  1. The AutoEventWireup attribute is set to False.

  2. The AutomaticPostBack attribute is set to False.

  3. comThe codebehind module is not properly piled.

  4. The ListBox must be defined WithEvents.

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Correct Option: B

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