You are a desktop support technician for your company. All client computers run Windows XP Professional and Microsoft Office XP.

A user reports that Microsoft Excel will no longer open on his computer. When the user attempts to open Excel, he receives an error message indicating that a required file or DLL is missing.

You need to ensure that the user can open Excel. You want to achieve this goal as quickly as possible.

What should you instruct the user to do?

A.
Repair Office by using Add or Remove Programs in Control Panel.

B.
Copy the DLL files from a network-based Office installation point to his local computer.

C.
Visit the Microsoft Windows Update Web site. Scan for and install all available updates.

D.
Select Detect and Repair… from the Help menu in an Office application other than Excel.