Which automation configuration should be used?

Northern Trail Outfitters is using a Smart Capture form in CloudPages to capture contest registrations in a data extension. Corporate has requested a nightly file with all registrants in this data extension be sent daily from Marketing Cloud to an external SFTP.

Which automation configuration should be used?
A . Schedule Starting Source > SQL Query Activity > File Transfer Activity
B . File Drop Starting Source > SQL Query Activity > File Transfer Activity
C . Schedule Starting Source > Data Extract Activity > File Transfer Activity
D . File Drop Starting Source > Data Extract Activity > File Transfer Activity

Answer: D