问题：

[多选] When configuring IOS firewall （CBAC） operations on Cisco routers， the "inspection rule" could be applied at which two locations？ （）

A .  at the untrusted interfacein the inbound direction
B .  atthe untrusted interface in theoutbounddirection
C .  at thetrusted interface inthe inbound direction
D .  at the trusted interface in the outbound direction
E .  at the trusted and untrusted interfaces in the inbound direction
F .  at the trusted and untrusted interfaces in the outbounddirectio