The System Administrator of a Company Is Trying to Find

The system administrator of a company is trying to find out why acceleration is not working for the traffic. The traffic is allowed according to the rule base and checked for viruses. But it is not accelerated. What is the most likely reason that the traffic is not accelerated?

A) There is a virus found. Traffic is still allowed but not accelerated
B) The connection required a Security server
C) Acceleration is not enabled
D) The traffic is originating from the gateway itself