An Administrator Needs to Protect Five Websites with SSL Certificates

An administrator needs to protect five websites with SSL certificates. Three of the websites have different domain names, and two of the websites share the domain name but have different subdomain prefixes. Which of the following SSL certificates should the administrator purchase to protect all the websites and be able to administer them easily at a later time?

A) One SAN certificate
B) One Unified Communications Certificate and one wildcard certificate
C) One wildcard certificate and two standard certificates
D) Five standard certificates