With respect to filtering traffic, how should a company use firewalls and anti$-$malware?

A company looking to filter traffic according to categories of activities that are likely to cause problems should use only firewalls; however, if the company is looking to filter traffic according to a database of specific problems, it should use both firewalls and anti$-$malware.

A company looking to filter traffic according to categories of activities that are likely to cause problems should use both firewalls and anti$-$malware; however, if the company is looking to filter traffic according to a database of specific problems, it should use only firewalls.

A company looking to filter traffic according to categories of activities that are likely to cause problems should use antimalware; however, if the company is looking to filter traffic according to a database of specific problems, it should use firewalls.

A company looking to filter traffic according to categories of activities that are likely to cause problems should use firewalls; however, if the company is looking to filter traffic according to a database of specific problems, it should use anti$-$malware.