A Developer created a new AWS account and must create a scalable AWS Lambda function that meets the following requirements for concurrent execution:

• Average execution time of 100 seconds
• 50 requests per second

Which step must be taken prior to deployment to prevent errors?

A. Implement dead-letter queues to capture invocation errors
B. Add an event source from Amazon API Gateway to the Lambda function
C. Implement error handling within the application code
D. Contact AWS Support to increase the concurrent execution limits