Autumn Winds, Inc., is a mail order firm that specializes in expensive and unusual gifts for all occasions. Autumn Winds keeps a large file of information on all of its regular customers, including names, addresses, the types of gifts they have ordered in the past, and the size and frequency of their orders. The electronic file in which this information is stored in an example of $a(n)$ :

A$)$ spreadsheet.

B$)$ formatted text file.

C$)$ PERT file.

D$)$ database.