The break-even point is that level of activity where: Select one: O a profit equals to zero. b. total revenue equals total fixed cost. O c. total contribution margin equals the sum of variable cost plus fixed cost. d. sales revenue equals total variable cost. O e. variable cost equals fixed cost. On the CVP graph, the next unit sold will increase sales by an amount equal to the Select one: O a. Contribution margin ratio O b. Variable costs per unit O c. Difference between contribution margin and fixed costs O d. Selling price per unit minus the variable costs per unit O e. Selling price per unit