Which of the following would be the BEST option to recommend to the CIO?

Following a merger, the number of remote sites for a company has doubled to 52. The company has decided to secure each remote site with an NGFW to provide web filtering, NIDS/NIPS, and network antivirus. The Chief Information Officer (CIO) has requested that the security engineer provide recommendations on sizing for the firewall with the requirements that it be easy to manage and provide capacity for growth.

The tables below provide information on a subset of remote sites and the firewall options:

Which of the following would be the BEST option to recommend to the CIO?
A . Vendor C for small remote sites, and Vendor B for large sites.
B . Vendor B for all remote sites
C . Vendor C for all remote sites
D . Vendor A for all remote sites
E . Vendor D for all remote sites

Answer: D