Use the following three statements to answer this question:

i. the more stable the possible returns, the greater the risk.

ii. generally, security returns display positive corrections with one another but they are less than one, because all securities tend not to follow the movements of the overall market.

iii. any value of correlation less than +1 provides a possibility of diversification.

a. only ii and iii are correct

b. all are correct

c. only I and ii are correct

d. only I and iii are correct

e. only iii is correct