A company hosts an application used to upload files to an Amazon S$3$ bucket. Once uploaded, the files are processed to extract metadata, which takes less than $5$ seconds. The volume and frequency of the uploads varies from a few files each hour to hundreds of concurrent uploads. The company has asked a solutions architect to design a cost$-$effective architecture that will meet these requirements.

What should the solutions architect recommend?

A$.$ Configure AWS CloudTrail trails to log S$3$ API calls. Use AWS AppSync to process the files.

B$.$ Configure an object$-$created event notification within the S$3$ bucket to invoke an AWS Lambda function to process the files.

C$.$ Configure Amazon Kinesis Data Streams to process and send data to Amazon S$3.$ Invoke an AWS Lambda function to process the files.

D$.$ Configure an Amazon Simple Notification Service $($Amazon SNS$)$ topic to process the files uploaded to Amazon S$3.$ Invoke an AWS Lambda function to process the files.