The ________ button is the arrow to the right of a header row label in a table

According to MLA style, the correct punctuation for a citation at the end of a sentence is:

A) .(Smith21) B) (Smith,21). C) (Smith21). D) .(Smith21).

Identify the letter of the choice that best matches the phrase or definition.

A. Word-processing program. B. Spreadsheet program. C. Database program. D. Presentation program. E. E-mail program.