Which two options can a route pattern be assigned? (Choose two.)

A.
a gateway that is not assigned to a route group

B.
a gateway that is assigned to a route group

C.
a route list with no route groups configured

D.
a route list with one or more route groups configured

Explanation:
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/7_1_2/ccmsys/accm-
712cm/a03rp.html (Route Plan Overview)