______ Refers to Protective Services That a Private Security Firm

______ refers to protective services that a private security firm provides to people,agencies and companies that do not employ their won security personnel or that need extra protection,while ______ refers to in-house protective services that a security staff provides for the entity that employs it.

A) proprietary security-contract security
B) external security-internal security
C) contract security-proprietary security
D) internal security-external security