Kenneth Boyer is considering opening a bicycle shop in north Vancouver. Boyer enjoys biking, but this is to be a business endeavour from which he expects to make a living. He can open a small shop, a large shop, or no shop at all. Because there will be a five-year lease on the building that Boyer is thinking about using, he wants to make sure he makes the correct decision. Boyer is also thinking about hiring his old marketing professor to conduct a marketing research study to see if there is a market for his services. The results of such a study could be either favourable or unfavourable. Develop a decision tree for Boyer.