Each of the following statements may (or may not) describe one of these technical terms. For each statement indicate the accounting term described or answer "none" if the statement does not correctly describe any of the terms. LIST OF TERMS: VARIABLE COSTS BREAK EVEN POINT ECONOMIES OF SCALE RELEVANT RANGE FIXED COSTS SALES MIX CONTRIBUTION MARGIN SEMIVARIABLE COSTS UNIT CONTRIBUTION MARGIN

A. The level of sales at which revenue exactly equals costs and expenses.
B. Costs that remain unchanged despite changes in sales volume.
C. The span over which output is likely to vary and assumptions about cost behavior generlaly remain valid.
D. Sales revenue less variable cost per unit.
E. Unit sales price minus variable cost per unit.
F. The reduction in unit cost achieved from a higher level of output.
G. Costs that respond to changes in sales volume by less than a proportionate amount.
H. Operating income less variable costs.