Everrest Inc.'s stock has a 36% chance of producing a 15.25% return, a 28% chance of producing a 23.50% return, and a 36% chance of producing a 4.25% return. What is the firm's expected rate of return?

a). 10.54%

b). 13.07%

c). 8.22%

d) 12.44%

e) 11.91%