Find the quote for the Lake Lead Group. Assume that the dividend is constant. a. What was the highest dividend yield over the past year? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) b. What was the lowest dividend yield over the past year? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)