For each change in industry demand below, state whether this would lead to entry of new firms or exit of incumbent firms in the long-run (no explanation needed here): a) an increase in consumer income (the good produced is inferior) b) a decrease in the number of buyers of the good c) the release of a new medical finding that states consumption of the good leads to better health effects d) the price of a substitute good for this product has increased e) the price of a complement good for this product has increased