16. The market is books. For each question, draw an original supply and demand model and then show the change to that model determined by the situation given in the problem. Be sure to identify what happens to the price and quantity. a. The price of paper goes down (_l2) b. Consumers prefer reading on digital devices (_/2) c. The number of sellers of books increases (_l2) d. A study is released noting the significant benefits of reading (_l2)