In 2019, the entrance fee into Yellowstone National Park in northwestern Wyoming was $35 for a private, noncommercial vehicle; $30 for a motorcycle or a snowmobile; and $15 for each visitor entering on foot or riding a bicycle. The fee provides the visitor with a 7-day entrance permit into Yellowstone and nearby Grand Teton National Park.

a. Would you expect the demand for entry into Yellowstone National Park for visitors in private, noncommercial vehicles to be elastic or inelastic? Briefly explain. 

b. There are three general ways to enter the park: in a private, noncommercial vehicle; on a motorcycle; and by foot or bicycle. Which way would you expect to have the largest price elasticity of demand, and which would you expect to have the smallest price elasticity of demand? Briefly explain.