Which two dial peers will correctly route calls to emergency services?

You are CCNA VOICE associate in Certkey.com. You need configure PSTN voice gateway. Which two dial peers will correctly route calls to emergency services?

A.
dial-peer voice 1 pots destination-pattern 9911 prefix 911 port 1/0/0

B.
dial-peer voice 2 pots destination-pattern 911 forward-digits all port 1/0/0

C.
dial-peer voice 9911 pots destination-pattern 9911 forward-digits all port 1/0/0

D.
dial-peer voice 2 pots destination-pattern 911 forward-digits 3 port 1/0/1