A security administrator needs an external vendor to correct an urgent issue with an organizations physical access control system (PACS). The P

ACS does not currently have internet access because it is running a legacy operation system.

Which of the following methods should the security administrator select the best balances security and efficiency?

A. Temporarily permit outbound internet

access for the pacs so desktop sharing can be set up

B. Have the external vendor come onsite and provide access to the PACS directly

C. Set up VPN concentrator for the vendor and restrict access to the PACS using desktop sharing

D. Set up a web conferen

ce on the administrators pc; then remotely connect to the pacs