Refer to the exhibit.

The HQ site uses area code 650. The BR1 site uses area code 408. The long distance national code for
PSTN dialing is 1. To make a long distance national call, an HQ or BR1 user dials access code 9,
followed by 1, and then the 10-digit number.
Both sites use MGCP gateways. AAR must use globalized call routing using a single route pattern.
Assume that all outgoing PSTN numbers are localized at the egress gateway as shown in the exhibit.
How many route lists and route groups should be configured for AAR at a minimum?

A.
a single route list with a local route group for each site

B.
two route lists and two route groups for each site

C.
a single route list and four route groups for each sitea

D.
None. The AAR CSS can point directly to the route pattern.