The Chief Information Security Officer is concerned about the possibility of employees

downloading malicious files from the internet and opening them on corporate workstations. Which

of the following solutions would be BEST to reduce this risk?

A$.$ Integrate the web proxy with threat intelligence feeds.

B$.$ Scan all downloads using an antivirus engine on the web proxy.

C$.$ Block known malware sites on the web proxy.

D$.$ Execute the files in the sandbox on the web proxy.