A route pattern exists in partition “Site1_Local” and an identical route pattern exists in partition “HQ_Local”. A calling search space containing “Site1_Local” is assigned to an IP phone, and a calling search space containing “HQ_Local” is assigned to a line on that phone. How does Cisco Unified Communications Manager determine which route pattern to use? Aiotestking.com

A.
It uses only the CSS associated with the line.

B.
It uses only the CSS associated with the device.

C.
It does a logical OR of the partitions in the two CSSs and searches for the longest match.

D.
It concatenates the two CSSs and gives priority to partitions in the CSS assigned to the line.

E.
It concatenates the two CSSs and gives priority to partitions in the CSS assigned to the device.