. John's utility function is U = 350070.75, where I is his annual income. Which of the following best describes his attitude to risk? O A. None of the listed options. OB. He prefers a 50% chance of gaining $2,500 and a 50% chance of gaining $500 to a sure gain of $1,500. OC. He is indifferent between a sure gain of $1,500 and a 50% chance of gaining $2,500 and a 50% chance of gaining $500. O D. He prefers a sure gain of $1,500 to a 50% chance of gaining $2,500 and a 50% chance of gaining $500