Which purpose of configuring perfect Forward secret is true?
A.
For every negotiation of a new phase 1 SA, the two gateways generate a new set of phase 2 keys.
B.
For every negotiation of a new phase 2 SA, the two gateways generate a new set of phase 1 keys.
C.
For every negotiation of a new phase 1 SA, the two gateways generate a new set of phase 1 keys.
D.
For every negotiation of a new phase 2 SA, the two gateways generate a new set of phase 2 keys.