Because of pre-existing design constraints, you set up manual NAT rules for HTTP server are both using automatic NAT rules. All traffic from your FTP and SMTP servers are passing through a Security Gateway Way without a problem, but traffic from the Web server is dropped on rule 0 because of anti-spoofing settings. What is causing this?

A.
Allow bi-directional NAT is not checked in Global Properties.

B.
Manual NAT rules are not configured correctly.

C.
Translate destination on client side is not checked in Global Properties under manual NAT rules.

D.
Routing is not configured correctly.