Northern Trail Outfitters wants to set up an automation that imports a file and sends an email to the contacts when the file is dropped on the SFTP. The name of the file will change, though it will always start with thankyou_customers. How would they set up the Import Activity to know the name of the file?

A. Set File Naming Pattern to %%AUTOMATED_FILENAME%%

B. Set File Naming Pattern to %%BASEFILENAME_FROM_TRIGGER%%

C. Filename is automatically passed to Import Activity with File Drop Automations

D. Check the 'Use filename from Automation' checkbox