The return pattern on your favorite stock has been 5%, 8%, -12%, 15%, 21% over the last five years. What has been your average return and holding period return over the last 5 years? :

a. 4.5%; 6.5%

b. 7.4%; 38.9%

c. 7.4%; 7.76%

d. 7.4%; 76.73%

e. None of these