Your research shows the following probability distribution of Stock X's returns under each economic conditions (strong, normal or weak) during the next year. What's the Sharpe ratio for Stock X, if the risk-free rate is 1%?

Economic condition: Strong | Probability: 30% | Return (r): 21.0%

Economic condition: Normal | Probability: 40% | Return (r): 10.0%

Economic Condition: Weak | Probability: 30% | Return (r): -16.0%

a. 28.3%

b. 30.4%

c. 27.7%

d. 12.3%

e. 28.6%