Taggart Inc.'s stock has a 50% chance of producing a 34% return, a 30% chance of producing a 9% return, and a 20% chance of producing a -20% return. What is the firm's expected rate of return? Do not round your intermediate calculations.

a. 18.30%

b. 23.00%

c. 21.00%

d. 19.70%

e. 15.70%