Which sentence follows AP Style Guide rules?

A. Marisol bought three packs of gum, and a box of chocolate chip cookies.

B. Blueberries, cherries, and apples make good pie filling.

C. Luke has owned three vehicles: a Honda Accord, a Ford Escort and a Dodge Ram.

D. Granddad's birthday dinner included roast chicken, green bean casserole, and coconut cake.