Why does FortiGate keep TCP sessions in the session table for some seconds even after both sides (client and server) have terminated the session?

exams NSE4_FGT-7.2 V1 NSE4_FGT-7.2 exam 0 Comments

Why does FortiGate keep TCP sessions in the session table for some seconds even after both sides (client and server) have terminated the session?
A . To remove the NAT operation.
B. To generate logs
C. To finish any inspection operations.
D. To allow for out-of-order packets that could arrive after the FIN/ACK packets.

Answer: D