20. The demand curve for a typical good has a. a negative slope because some consumers switch to other goods as the price of the good rises. b. a negative slope because the supply of the good rises as demand rises. ( 4 c. a negative slope because the good has less "snob appeal" as its price falls. d. an inverse slope because as the price goes up, the good has more profitability. e. a positive slope because price is a clear indicator of need