Which statement best describes application recognition on the Cisco ASA NGFW?

Which statement best describes application recognition on the Cisco ASA NGFW?

A.
Application recognition is based only on signatures that are constantly updated, which are
usually released at a monthly cadence.

B.
Application recognition is based on signatures, heuristics, and content scanning, which
removes the need to tie applications to ports.

C.
Application recognition is based on custom signatures based on URL, FQDN, user agent
strings in the HTTP stream, and IP addresses and ports.

D.
Application recognition is based on PRSM that supports quick filtering capabilities to
search for a particular application.