If No Item Is Selected in a ListBox, What Value

question 66

Multiple Choice

If no item is selected in a ListBox, what value is in the SelectedIndex property?

• A) false
• B) true
• C) 0
• D) −1

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Definitions:

Opportunity Cost

The cost of foregoing the next best alternative when making a decision, essentially what is sacrificed when a particular choice is made.

Differential Cost

The variation in overall expenses incurred from choosing one option instead of another.

Machine

An apparatus used for a specific purpose in industrial settings, commonly for manufacturing, processing, or shaping materials.

Helpline Costs

Expenses incurred in operating a support service that provides assistance to users, typically over the phone or online.