Franca's utility function isU=1^1/4. She goes to the casino to play "Craps", which requires her to roll a pair of dice. If she rolls a 3,4, 7 or 9, she will receive $ 200. Otherwise, she loses her bet of $ 20. Her probability of rolling a 3 is 1/18, her probability of rolling a 4 is 3/36, the probability of rolling a 7 is 1/6 and the probability of rolling a 9 is 4/36. What is her expected payoff?

a. 62.91

b. 95

c. 71.66

d. 22.22