A nurse is reviewing a new prescription for a client. The nurse should identify that which of the following abbreviations used by the provider indicates “to administer medications before meals”?

A. NG: Stands for nasogastric, referring to a tube inserted through the nose into the stomach. B. T: Not a standard abbreviation for medication administration. C. DNR: Stands for "Do Not Resuscitate," unrelated to medication timing. D. AC: "AC" is the standard medical abbreviation for "before meals" (Latin: ante cibum).