Consider the three assets, HVN, QAN and Rio. All three assets have the same correlation with eachother of 0.1. HVN has an expected return of 5% and a standard deviation of 6%. QAN has an expected return of 7% and a standard deviation of 8%. RIO has an expected return of 8% and a standard deviation of 10%. Which of the following combinations of stocks will provide the best risk-return outcome for a risk-averse investor?

A - RIO

B - RIO and HVN

C - RIO and QAN

D - RIO, QAN and HVN