Finish the following sentence with the best choice: How to give bath-bombs their shape.

Choices:
- On a small cup, pour bath bomb salt into cup and push firmly. Place cup upside down and tap lightly to get bath bomb out of cup.
- On a small shot glass, pour bath bomb salt into cup and push firmly. Place glass upside down and tap lightly to get bath bomb out of glass.

Answer:
On a small cup, pour bath bomb salt into cup and push firmly. Place cup upside down and tap lightly to get bath bomb out of cup.