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How can a developer refactor a data collection application using Amazon API Gateway, AWS Lambda, and Amazon S3 to provide real-time validation status updates on a user dashboard without manual refreshes?
A
Use API Gateway WebSocket API for real-time communication, associating user uploads with WebSocket IDs and pushing validation status updates.
B
Deploy a WebSocket server on an EC2 instance to manage real-time updates by receiving user file uploads and pushing processing status to the user interface.
C
Utilize Amazon SNS for sending email notifications to users upon completion of the file validation process.
D
Leverage DynamoDB Streams in conjunction with Amazon SNS for real-time dashboard updates by streaming data changes and pushing notifications to the user interface.
