Which of the following would cause a shift to the right of the demand curve forgasoline?

1.A large increase in the price of public transportation.

2.A large decrease in the price of automobiles.

3.A large reduction in the costs of producing gasoline.

a.1 only. b.2 only.

c.1 and 2only.

d.2 and 3only.

e.1, 2 and 3.