You are a desktop support technician for your company.

A new user reports that she cannot open applications by double-clicking the icons on her desktop. When she clicks an icon, it displays only a menu. You ask the user to test the functionality by using the keyboard commands, and it works correctly. The user states that she presses the mouse button with her index finger as illustrated in the user??s manual, but she has the mouse on the opposite side of her desk.

What is the most likely cause of the problem?

A.
The mouse is defective and needs to be replaced.

B.
The mouse is not fully plugged into the port on the computer.

C.
The system and regional properties are set for the wrong country and need to be set for the correct country.

D.
The mouse is working correctly and only needs to be changed for left-hand use.