How will an incoming call to 503 be routed based on this configuration?

A.
Incoming call will be routed sequentially to users that belong to hunt group 1.

B.
The call will be routed sequentially to users that belong to hunt group 2.

C.
The call will be routed sequentially to users that belong to hunt group 3.

D.
The call will be routed sequentially to users that belong to hunt group 3 and then sequentially to hunt groups 1 and 2.