Which of these statements illustrates consumer surplus? Choose one: O A. Andre received a 10% discount at the local pizzeria because he is a college student. O B. Katie bought a new car for 15% below the sticker price. O C. Patricia would have babysat her professor's child for $10 per hour, but he paid her $15 per hour. O D. Mike would have paid $100 for a new jacket but ended up paying $70