Taggart Inc.'s stock has a 50% chance of producing a 32% return, a 30% chance of producing an 8% return, and a 20% chance of producing a -25% return. What is the firm's expected rate of return? Do not round your intermediate calculations.

a. 21.67%

b. 18.40%

c. 18.60%

d. 13.40%

e. 15.00%