how to find the expected rate of return and standard deviation

C) Buy A because it has a higher CV SD(RA) SD(RB) 0.390 0.149 Buy B because it has a higher CV CV A CV B E(RA) E(R3) CV A SD(RA) SD(RB) E(RA) E(R3) CV A CV B SD(RA) SD(RB) 1.268 0.990 0.05 0.105 3.606 2.947 0.308 0.201 0.26 0.145 5.385 0.990 o. 180 0.309 Z) Buy A because it has a lower risk CV A 1.467 1.220