How many destinations can be configured for a SIP trunk on a Cisco Unified Communications
Manager 9.1 system when the destination address is an SRV?

A.
1

B.
2

C.
3

D.
8

E.
16

Explanation:
SIP trunks can be configured with up to 16 destination IP addresses, 16 fully qualified domain names,
or a single DNS SRV entry.

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/8x/uc8x/trunks.html