Read the following article and answer the question by choosing from the options.

The day was saved when we found a grill and then Avery had the genius idea to take half a cardboard box that had once held Red Stripe and fill it with paper and charcoal . It was like a charcoal chimney except that it itself was flammable . Again , that could have gone horribly wrong , but it worked perfectly .

Why would they use the Red Stripe box ?
Options:
-They needed something for holding flammable material .;
-None of the above choices .;
-They needed something for holding beer .;
-They needed something for holding keys .;...A:
They needed something for holding flammable material .