Which command do you use to manually remove antivirus patterns?

Which command do you use to manually remove antivirus patterns?

A.
request security utm anti-virus juniper-express-engine pattern-delete

B.
request security utm anti-virus juniper-express-engine pattern-reload

C.
request security utm anti-virus juniper-express-engine pattern-remove

D.
delete security utm anti-virus juniper-express-engine antivirus-pattern