CollabCorp is a global company with two clusters, emea.collab.corp and apac.collab.corp. URI dialing is implemented and working in each cluster. The company configured routing between clusters to make inter-cluster calls via URI, but this is not working as expected. Which two configuration elements should be checked to resolve this issue? (Choose two.)
A. intercluster trunk
B. directory URI partition
C. SIP route pattern
D. calling search space and partition
E. SIP trunk
