When you use a form to add or change the data in a record, you have to use the Refresh All button on the ____ tab to update the corresponding table.

A ____ is a three- or four-letter sequence, preceded by a period, that identifies the file type.

A. filename B. file extension C. file suffix D. file property

When one of the program statement included within the body of a loop is another loop, a(n) ____________ loop is created.

Fill in the blank(s) with the appropriate word(s).