Which is the MOST cost-efficient deployment strategy?

The development team is working on an API that will be served from Amazon API gateway. The API will be served from three environments: development, test, and production. The API Gateway is configured to use 237 GB of cache in all three stages.

Which is the MOST cost-efficient deployment strategy?
A . Create a single API Gateway with all three stages.
B . Create three API Gateways, one for each stage in a single AWS account.
C . Create an API Gateway in three separate AWS accounts.
D . Enable the cache for development and test environments only when needed.

Answer: D