Answer - C.
The AWS Documentation mentions the following:
Amazon CloudFront is a web service that gives businesses and web application developers an easy and cost-effective way to distribute content with low latency and high data transfer speeds.
Like other AWS services, Amazon CloudFront is a self-service, pay-per-use offering, requiring no long term commitments or minimum fees.
With CloudFront, your files are delivered to end-users using a global network of edge locations.