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