A company is migrating a legacy storefront web application to the AWS Cloud. The application is complex and will take several months to refactor. A solutions architect recommended an interim solution of using Amazon CloudFront with a custom origin pointing to the SSL endpoint URL for the legacy web application until the replacement is ready and deployed. The interim solution has worked for several weeks. However, all browser connections recently began showing an HTTP 502 Bad Gateway error with the header `X-Cache: Error from cloudfront.` Monitoring services show that the HTTPS port 443 on the legacy web application is open and responding to requests. What is the likely cause of the error, and what is the solution?

Topic #: - All ANS-C00 Questions

A. The origin access identity is not correct. Edit the CloudFront distribution and update the identity in the origins settings.
B. The SSL certificate on the CloudFront distribution has expired. Use AWS Certificate Manager (ACM) in the us-east-1 Region to replace the SSL certificate in the CloudFront distribution with a new certificate.
C. The SSL certificate on the legacy web application server has expired. Use AWS Certificate Manager (ACM) in the us-east-1 Region to create a new SSL certificate. Export the public and private keys, and install the certificate on the legacy web application.
D. The SSL certificate on the legacy web application server has expired. Replace the SSL certificate on the web server with one signed by a globally recognized certificate authority (CA). Install the full certificate chain onto the legacy web application server. Most Voted

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