Multi-choice problem: Choose from the options at the end, and answer how do you do this: Making a portable stove

Pick your answer from:
a). Take a smaller piece of wood and cover it in a fuel source. Proceed to light it on fire and use it as a stove.;
b). Take an old soda can and cut it apart. Reassemble it into a ring and use a fuel source to light it.;
b).