Which of the following are examples of price discrimination that take advantage of customer impatience?

Choose one or more:

A. charging more for first-class airline tickets than for economy tickets 

B. charging more for a hardcover book that comes out before the same book in paperback

C. charging full price for brand-new designer clothing and discounting last season's fashions

D. special discounts for repeat buyers 

E. charging high prices for brand-new models of smartphones

F. offering special parking for expectant mothers