Which rewrite action type can the administrator apply to the Citrix ADC configuration to accomplish this?

A Citrix Administrator needs to protect the HTTP backend server type without actually removing the header.

Which rewrite action type can the administrator apply to the Citrix ADC configuration to accomplish this?
A . REPLACE
B . CORRUPT_HTTP_HEADER
C . REPLACE_HTTP_REQ
D . REPLACE_ALL

Answer: A