Which of the Following Is a Real Example of Price

Multiple Choice

Which of the following is a real example of price discrimination?

A) Airlines set different prices for business people and vacationers.
B) Publishers charge high prices on hardback and low price on paperback books.
C) IBM's regular version of a printer that prints at 10 pages per minute is more expensive than the Series E that prints five pages per minute.
D) All of these examples are real.