The continuously compounded annual return on a stock is normally distributed with a mean of 20% and standard deviation of 30%. With 95.44% confidence, we should expect its actual return in any particular year to be between which pair of values? (Hint: Look again at Figure 5.4.)

a. −40.0% and 80.0%

b. −30.0% and 80.0%

c. −20.6% and 60.6%

d. −10.4% and 50.4%