Use the data in the stock table to calculate the current yield. Which stock comes with less risk?

31. Use the data in the stock table to calculate the current yield. Which stock comes with less risk?
RightMed comes with less risk.
Is is not possible to determine which stock comes with less risk using the data in the stock table.
HiLoMart comes with less risk.
RightMed and HiLoMart have the same amount of risk.