A. Decrease, Increase, Decrease, Increase B. NI crease, Decrease, Increase C. Decrease, Increase, Decrease, Decrease D. NE, Decrease, Increase, Decrease 27. A 20% increase in sales volume will result in a: A. 20% increase in total variable cost B. 20% decrease in total variable cost C. 20% increase in unit variable cost D. 20% decrease in unit variable cost 28. Which is an example of a step cost? A. Soft drink B. Depreciation C. Phone plan D. Pizza E. Property tax FER