Joe works for a company that has a traveling sales force. The company has asked Joe to research a way for the sales force to have real-time information on the availability of its salable products. The company has an intranet application that allows it to see up-to-the minute information. The company does not want to make this information public.
?
What should Joe recommend?

A. VPN
B. Firewall
C. Access control list
D. MDM policies

Answer: A