Which two command strings should be entered into the gatekeeper to give the SJ2 gateway priority over the SJ1 gateway?

The SJ local zone contains a gatekeeper that controls two gateways, SJ1 and SJ2. Both gateways provide access to area code 408. Which two command strings should be entered into the gatekeeper to give the SJ2 gateway priority over the SJ1 gateway? (Choose two.)

A.
zone prefix SJ 408 gw-priority 6 SJ1

B.
zone prefix SJ 408 gw-priority 6 SJ2

C.
zone prefix SJ 408 gw-priority 10 SJ1

D.
zone prefix SJ 408 gw-priority 10 SJ2

E.
zone prefix SJ 408 gw-priority 0 SJ2, 10 SJ1

F.
zone prefix SJ 408 gw-priority 6 SJ1, 10 SJ2

Explanation:
The simple syntax of zone prefix command is

zone prefix gatekeeper-name e164-prefix [gw-priority priority gw-alias,…]

For example, the command zone prefix SJ 408 gw-priority 6 SJ1

SJ is the gatekeeper-name, 408 is the E164-prefix area code, 6 is the priority and SJ1 is the GW-alias

The [gw-priority priority gw-alias,…] part defines how the gatekeeper selects gateways in its local zone for calls to numbers beginning with prefix e164-prefix. The priority ranges from 0 to 10, where 0 prevents the gatekeeper from using the gateway gw-alias for that prefix and 10 places the highest priority on gateway gw-alias. The default is 5.

By assigning SJ2 a priority value higher than that of SJ1, SJ2 will be the first choice when making call to this zone.