Finish the following sentence with the best choice: To preheat a ceramic mold to cast with aluminum.

Choices:
- Preheat the ceramic mold to 1500 F which is higher than the melting temperature of Aluminum.
- Preheat the ceramic mold to 1500 F which is higher than melting temperature of Steel.

Answer:
Preheat the ceramic mold to 1500 F which is higher than the melting temperature of Aluminum.