Which of the following must be configured on a FortiGate unit to redirect content requests to remote web cache servers?
A. WCCP must be enabled on the interface facing the Web cache.
B. You must enabled explicit Web-proxy on the incoming interface.
C. WCCP must be enabled as a global setting on the FortiGate unit.
D. WCCP must be enabled on all interfaces on the FortiGate unit through which HTTP traffic is passing.