Read the following context and choose the best option to answer the question.
Context: by Dan and Diane Hsieh White In Yilan , we baked sweet potatoes the old fashioned way . We had to build a fire pit using bricks and wrap the potatoes in foil . After the potatoes had cooked for an hour , we knocked the bricks down and dug out the goods .
Question: What is the old fashioned way of baking potatoes ?
Options: 
- They make them in a microwave .
 - They wrap them in foil .
 - They cook them in an oven .
 - None of the above choices .


They wrap them in foil .