Why does Cisco recommend assigning dynamic classification security group tag assignment at the access layer?

Why does Cisco recommend assigning dynamic classification security group tag assignment at the access layer?
A . Static security group assignments are more scalable.
B . Security group assignment occurs as users enter the network.
C . To use SXP to transport STG to IP mappings.
D . Security group assignment occurs as users leave the network.

View Answer

Answer: B