Which of the following is not part of the charges which can get acquired when using AWS Cloudfront?

Answer options:

A.Data Transfer In
B.Data Transfer Out
C.HTTP/HTTPS Requests
D.Invalidation Requests

Answer - A
This is mentioned in the AWS documentation
Amazon CloudFront charges are based on actual usage of the service in four areas: Data Transfer Out, HTTP/HTTPS Requests, Invalidation Requests, and Dedicated IP Custom SSL certificates associated with a CloudFront distribution.
For more information on Cloufront pricing please see the below link:
https://aws.amazon.com/cloudfront/details/#faq