Refer to the exhibit. A standard local route group is configured for long-distance calls. Calls from building A succeed, but calls from building B fail. On the system, each building has its own device pool. The DNA tool is used to test the configuration. How is this issue resolved?
A. Change the partition of the route pattern.
B. Add a sip trunk inside route group Standard Local Route Group.
C. Modify the route pattern to add a prefix of 91.
D. Add a local route group on the device pool configuration.
