What can be concluded about this request processing order?

A.
ProxyAV is accessed in ICAP REQMOD mode
B.
ProxyAV is accessed ICAP RESPMOD mode
C.
ProxySG with ProxyAV is deployed as a forward proxy
D.
Proxy SG with ProxyAV is deployed as a reverse proxy
Explanation:
I agree with the answer. A
I have the same idea. A