You've observed the following returns on Crash-n-Burn Computer's stock over the past five years: 4 percent, -8 percent, 29 percent, 19 percent, and 14 percent. What was the arithmetic average return on the company's stock over this five-year period? What was the variance of the company's returns over this period? 2a. Calculate the cash break-even point of Case 2. 2b. Calculate the accounting break-even point of Case 2. 3a. Calculate the cash break-even point of Case 3. 3b. Calculate the accounting break-even point of Case 3