Can June use an antivirus program in this case and would it be effective against a polymorphic virus?

June, a security analyst, understands that a polymorphic virus has the ability to mutate and can change its known viral signature and hide from signature-based antivirus programs. Can June use an antivirus program in this case and would it be effective against a polymorphic virus?

A.
No. June can’t use an antivirus program since it compares the size of executable files to the database of known viral signatures and it is effective on a polymorphic virus

B.
Yes. June can use an antivirus program since it compares the parity bit of executable files to the database of known check sum counts and it is effective on a polymorphic virus

C.
Yes. June can use an antivirus program since it compares the signatures of executable files to the database of known viral signatures and it is very effective against a polymorphic virus

D.
No. June can’t use an antivirus program since it compares the signatures of executable files to the database of known viral signatures and in the case the polymorphic viruses cannot be detected by a signature-based anti-virus program

Explanation:
Although there are functions like heuristic scanning and sandbox technology, the Antivirus program is still mainly depending of signature databases and can only find already known viruses.