Answer :
Mike can describe or classify this malware as a backdoor.
What is a backdoor in malware?
A backdoor is known to be a kind of method that is said to be used when authorized and unauthorized users are able to get get in or around any normal security measures and take or have a high level user access on a system, network or others.
So in the above case, Mike can describe or classify this malware as a backdoor.
Therefore, option d is correct.
See options below
A. A WORM
B. CRYPTO MALWARE
C. A TROJAN
D. A BACKDOOR
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