Which of the following would be the LEAST complicated implementation?

A Solutions Architect must design a web application that will be hosted on AWS, allowing users to purchase access to premium, shared content that is stored in an S3 bucket. Upon payment, content will be available for download for 14 days before the user is denied access

Which of the following would be the LEAST complicated implementation?
A . Use an Amazon CloudFront distribution with an origin access identity (OAI) Configure the distribution with an Amazon S3 origin to provide access to the file through signed URL’s Design a Lambda function to remove data that is older than 14 days.
B . Use an S3 bucket and provide direct access to the tile Design the application to track purchases in a DynamoDH table
Configure a Lambda function to remove data that is older than 14 days based on a query to Amazon DynamoDB
C . Use an Amazon CloudFront distribution with an OAI Configure the distribution with an Amazon S3 origin to provide access
to the file through signed URLs Design the application to sot an expiration of 14 days for the URL
D . Use an Amazon CloudFront distribution with an OAI Configure the distribution with an Amazon S3 origin to provide access
to the file through signed URLs Design the application to set an expiration of 60 minutes for the URL and recreate the URL as necessary

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Answer: C