Finish the following sentence with the best choice: To make a sand cast aluminum ring holder,

Choices:
- melt iron scraps inside a little aluminum container using an oven that can reach very high temperatures (800° C).
- melt aluminum scraps inside a little iron container using an oven that can reach very high temperatures (800° C).

Answer:
melt aluminum scraps inside a little iron container using an oven that can reach very high temperatures (800° C).