You are a desktop support technician for your company.

A customer running Windows XP Home Edition with an antivirus application installed reports that he downloaded a program from the Internet and installed it on his computer. After installing the program, he began to receive e-mail messages from people whom he does not know. These e-mail messages state that he sent an e-mail message to them. The user removed the program but he is still receiving the e-mail messages with the same message content from people whom he does not know.

You need to identify the cause of these e-mail messages.

What should you instruct the user to do?

A.
Connect to the Microsoft Windows Update Web site and scan his computer.

B.
Download the most recent virus signature files and scan his computer for viruses.

C.
Run the Microsoft Baseline Security Analyzer (MBSA) tool and scan for security updates.

D.
Run the Security Configuration and Analysis tool and analyze his computer by using the hisecws.inf security template.