What should a consultant consider when ingesting this data stream?

Every day, Northern Trail Outfitters (NTO) uploads a summary of the last 24 hours of store transactions to a new file in an Amazon S3 bucket, and files older than 7 days are automatically deleted. Each file contains a timestamp in a standardized naming convention.

What should a consultant consider when ingesting this data stream?
A . Ensure the refresh mode is set to "Upsert" and Refresh only new files" is selected
B. Ensure the refresh mode is set to "Full Refresh" and the filename contains a wildcard to accommodate the timestamp
C. Ensure the refresh mode is set to "Full Refresh" and "Refresh only new files’ is selected
D. Advise NTO to change their processes: this configuration is not supported

Answer: B