Finish the following sentence with the best choice: To stop Plaster of Paris sticking to the mold.

Choices:
- Wash the mold you want to fill with Plaster of Paris with hot water.
- Lubricate the mold you want to fill with Plaster of Paris with petroleum jelly.

Answer:
Lubricate the mold you want to fill with Plaster of Paris with petroleum jelly.