What would the decrypted data be after the File Transfer Activity completes?

Northern Trail Outfitters placed an encrypted file on their Marketing Cloud SFTP for import into a data extension. They are using a file transfer Activity to decrypt the file.

What would the decrypted data be after the File Transfer Activity completes?
A . Selected SFTP folder
B . Original SFTP folder
C . Target Data Extension
D . Safehouse

Answer: A