Which of these is a small cake baked in a small paper or aluminum cup?

A cupcake, fairy cake, or bun is a small cake designed to serve one person, which may be baked in a small thin paper or aluminum cup. As with larger cakes, frosting and other cake decorations such as fruit and candy may be applied. A standard cupcake uses the same basic ingredients as standard-sized cakes: butter, sugar, eggs, and flour.

Source: Wikipedia