the second drop-dowm menue contains : "lower,higher"

The expected returns are 15% for investment 1 and 12% for investment 2 . The standard deviations are 10% and 5% for investments 1 and 2 respectiely. Which investment is less risky based solely on standard deviation? Which investment looks better based on coefficient of variation? Which investment is less risky based solely on standard deviation? (Select from the drop-down menus.) is less risky because its standard deviation is