if we were to only change the demand curve for widgets price elasticity to =-1 and the price elasticity for the supply curve to n = 2, which demand prices would be right: a. The demand price should increase to approximately $20.33. b. The demand price should increase to approximately $21.00. c. The supply price should decrease to approximately $19.67. d. The demand price should increase to approximately $20.67. e. The supply price should decrease to approximately $19.00