which statement contains the correct gateway parameters?

Referring to the exhibit, which statement contains the correct gateway parameters?

A.
[edit security ike]
user@host# show
gateway ike-phase1-gateway {
policy ike-policy1;
address 10.10.10.1;
dead-peer-detection {
interval 20;
threshold 5;
}
external-interface ge-1/0/1.0;
}

B.
[edit security ike]
user@host# show
gateway ike-phase1-gateway {
ike-policy ike-policy1;
address 10.10.10.1;
dead-peer-detection {
interval 20;
threshold 5;
}
external-interface ge-1/0/1.0;
}

C.
[edit security ike]
user@host# show
gateway ike-phase1-gateway {
policy ike1-policy;
address 10.10.10.1;
dead-peer-detection {
interval 20;
threshold 5;
}
external-interface ge-1/0/1.0;
}

D.
[edit security ike]
user@host# show
gateway ike-phase1-gateway {
ike-policy ike1-policy;
address 10.10.10.1;
dead-peer-detection {
interval 20;
threshold 5;
}
external-interface ge-1/0/1.0;
}