You have an Azure application gateway named AppGW1 that balances requests to a web app named App1.

You need to modify the server variables in the response header of App1.

What should you configure on AppGW1?

A. HTTP settings

B. rewrites

C. rules

D. listeners

Reference:
https://docs.microsoft.com/en-us/azure/application-gateway/rewrite-http-headers-url