An internet café has several computers available for public use. Recently, users have reported the computers are much slower than they were the previous week. A technician finds the CPU is at 100% utilization, and antivirus scans report no current infection. Which of the following is MOST likely causing the issue?


A. Spyware is redirecting browser searches.
B. A cryptominer is verifying transactions.
C. Files were damaged from a cleaned virus infection.
D. A keylogger is capturing user passwords.