Consider a graph below which represents the purchase histories of 4 consumers buying 5 products. An edge between consumer a; and product b, indicates that consumer a, has bought product bj. Draw the flow network which represents the circulation problem corresponding to the design of a survey. Use the following constraints: In the survey, every consumer should be asked at least two question and no consumers more than three questions. For each product, we want exactly two replies of consumers. Solve this problem and show the survey design if you can. products (2-3 questions cach) (2 responses each)