Using your library or your favorite search engine, find three Web sites that have an SSL-EV digital certificate. Note that some sites that do have SSL-EV certificates will not show the green background until you log in to the site or place an item in the site’s shopping cart. For each site, write a paragraph in which you identify the CA that provides the SSL-EV certificate and explain why that site decided to incur the additional expense of buying an SSL-EV certificate. The Online Companion entry for this exercise includes links to CAs that sell SSL-EV digital certificates, which you might find useful.