A developer is writing an application that will process data delivered into an Amazon S3 bucket. The data is delivered approximately 10 times a day, and the developer expects the data will be processed in less than 1 minute, on average.
How can the developer deploy and invoke the application with the lowest cost and lowest latency?

A. Deploy the application as an AWS Lambda function and invoke it with an Amazon CloudWatch alarm triggered by an S3 object upload.
B. Deploy the application as an AWS Lambda function and invoke it with an S3 event notification.
C. Deploy the application as an AWS Lambda function and invoke it with an Amazon CloudWatch scheduled event.
D. Deploy the application onto an Amazon EC2 instance and have it poll the S3 bucket for new objects.