AAA Inc.'s stock has a 35% chance of producing a 36% return, a 35% chance of producing a 10% retum, and a 30% chance of producing a 28% return. What is the firm's expected rate of return? Do not round your intermediate calculations. a. 15.40% b. 6.40% c. 12.80% d. 11.06% e. 7.70%