An Online Retail Company Has Deployed a Serverless Application with AWS

Multiple Choice

An online retail company has deployed a serverless application with AWS Lambda, Amazon API Gateway, Amazon S3, and Amazon DynamoDB using AWS CloudFormation. The company rolled out a new release with major upgrades to the Lambda function and deployed the release to production. Subsequently, the application stopped working. Which solution should bring the application back up as quickly as possible?

A) Redeploy the application on Amazon EC2 so the Lambda function can resolve dependencies
B) Migrate DynamoDB to Amazon RDS and redeploy the Lambda function
C) Roll back the Lambda function to the previous version
D) Deploy the latest Lambda function in a different Region