What is narrative radio ad copy means?

• A. The ads that made in a story and the talents or announcer telling about the benefits of product, how to use the product, and where the product can be obtained
• B. A form of radio ad that conveys messages in the form of short duration songs
• C. A form of radio ad that only shows the conversation of one person only
• D. The ads that using a straight to the point approach or directly to the purpose of the radio ads