At many amusement parks, customers who enter the park after 4 p.m. receive a steep discount on the price they pay. This is a type of price discrimination because the amusement park charges a lower price to O a. people who have a more elastic demand for amusement parks. b. people who have a more inelastic demand for amusement parks. O c. people with 9-to-5 jobs. d. students who can't visit until after 4 p.m. anyway.