Which of the following is true of a cost-volume-profit graph? a. Operating losses will be incurred when the sales levels are to the left of the break-even point. b. Operating profits will be earned when the sales levels are on the break-even point. O c. The break-even point is the intersection point of the total sales and fixed cost lines. O d. Operating profits will be earned when the sales levels are to the left of the break-even point