Companies Vary as to the Amount of Security They Require

Multiple Choice

Companies vary as to the amount of security they require or can afford for their computer files. Firewalls are a type of software that protects computer files from unauthorized entry. A company that had developed a complete line of firewalls from a no-frills version to a version that uses retinal scans for admittance would most likely need to employ which promotional element?

A) sales promotion
B) advertising
C) public relations
D) personal selling