1. Which of the following events would shift the demand curve for gasoline to the left? a. The income of gasoline buyers rises and gasoline is a normal good. b. The income of gasoline buyers falls and gasoline is an inferior good. c. Public service announcements run on television encourage people to walk or ride bicycles instead of driving cars. d. The price of gasoline rises . e. The price of gasoline falls. f. Both b. and d. g. None of the above