By spinning a wheel, if the wheel stops in the black area (probability 7/24), you will get 10 dollars, if it stops in the white area (probability 8/24), you will lose 10 dollars, or if it stops in the walnut colour or orange area (probability 9/24), you neither earn nor lose. How much do you expect to earn by playing this game once?

a. -$5/12

b. $35/12

c. $0

d. -$5/6