A Company's Packaged Application Dynamically Creates and Returns Single-Use Text

A company's packaged application dynamically creates and returns single-use text files in response to user requests. The company is using Amazon CloudFront for distribution, but wants to future reduce data transfer costs. The company cannot modify the application's source code. What should a solution architect do to reduce costs?

A) Use Lambda@Edge to compress the files as they are sent to users.
B) Enable Amazon S3 Transfer Acceleration to reduce the response times.
C) Enable caching on the CloudFront distribution to store generated files at the edge.
D) Use Amazon S3 multipart uploads to move the files to Amazon S3 before returning them to users.