Which of the following stocks has the lowest total risk? 1) A stock with a beta of 0.7 and a standard deviation of expected return of 16% per year O2) A stock with a beta of 1.1 and a standard deviation of expected return of 18% per year 3) A stock with a beta of 1.3 and a standard deviation of expected return of 24% per year 4) A stock with a beta of 0.9 and a standard deviation of expected return of 13% per year 5) A stock with a beta of 1.5 and a standard deviation of expected return of 21% per year