Answer - A and C.
This is also mentioned in the AWS Documentation.
As an API developer, you control the behaviors of your API's frontend interactions by configuring the method request and a method response.
You control the behaviors of your API's backend interactions by setting up the integration request and integration response.
These involve data mappings between a method and its corresponding integration.
Options B and D are incorrect since these are used to control the behaviors of your API's backend interactions.