CompTIA A+ 220-902 Question I-65

A customer states that another technician just removed some viruses and now they are not able to connect to websites such as Windows Update, but are able to connect to others. Which of the following is the MOST likely cause of the issue?

A. NIC driver is damaged
B. Not all viruses have been fixed
C. Internet Explorer cache is full
D. Host file has been manipulated