Which of the Following Actions Should Be Taken by a Security

Which of the following actions should be taken by a security professional when a mission critical computer network attack is suspected?

A) Isolate the network, log an independent report, fix the problem, and redeploy the computer
B) Isolate the network, install patches, and report the occurrence
C) Prioritize, report and investigate the occurrence
D) Turn the router off, perform forensic analysis, apply the appropriate fix, and log incidents