How does FortiGate select the central SNAT policy that is applied to a TCP session?

How does FortiGate select the central SNAT policy that is applied to a TCP session?
A . It selects the SNAT policy specified in the configuration of the outgoing interface ，
B . It selects the first matching central SNAT policy, reviewing from top to bottom.
C . It selects the central SNAT policy with the lowest priority.
D . It selects the 5NAT policy specified in the configuration of the firewall policy that matches the traffic.

Answer: B