Choose one of the following markets. Which market structure is it likely to be in? What is the implication of the long-run profit of a firm in the industry? If you can enter the market, is it worth investing in it? Why? (One member only needs to answer on one market. At most 2 students in the group can choose to answer this question.) (i) Small Cafs selling food and drinks (ii) Factories producing Surgical Masks(iii) Travel Agencies selling local and overseas tours (iv) Airlines selling air travel service