Calculate the coefficients of variation for the following stocks:

Stock	Expected return	Standard deviation of return
1	0.065	0.29
2	0.04	0.17
3	0.15	0.24

1. What is the coefficient of variation for stock 1?

2.What is the coefficient of variation for stock 2?

3. What is the coefficient of variation for stock 3?

4. If you want to get the best risk-to-reward trade-off, which stock should you buy?