Question 4 (15 points) WNYC, the public radio station in New York, has an estimated listening audience of more than 1 million people each week, but only 75,000 (7.5%) of its listeners send in money to support the station. Contributions account for only 35% of WNYC's budget. Considering some properties of radio broadcasting services, answer the following questions: a) How do economists call the problem WNYC has? b) Why does this problem arise? c) Is there any solution to overcome this