A user's antivirus software reports an infection that it is unable to remove. Which of the following is the most appropriate way to remediate the issue?

Disabling System Restore is typically done after malware removal to prevent reinfection from restore points, not as the primary remediation step when the antivirus fails to remove the initial infection.

Utilizing a Linux live disc is a valid advanced remediation technique for stubborn malware, but updating the existing anti-malware is a more fundamental and often successful first step before resorting to more drastic measures.

Quarantining the infected system prevents the spread of malware, but it does not address the removal of the infection itself on the affected machine.

Anti-malware software relies on up-to-date definitions and engine components to effectively detect and remove the latest threats. If an infection cannot be removed, updating the anti-malware software is often the first and most critical step, as newer updates might contain the necessary signatures or heuristics to successfully eradicate the malware.