CVP Analysis and Cost Behavior Under Marginal Costing

Steps:

• CVP analysis studies the relationship between costs, volume, and profit, focusing on fixed and variable cost separation.
• Cost behavior refers to how costs change with activity levels, like output volume.
• Marginal costing directly classifies costs as fixed or variable, supporting clear CVP insights.
• CVP assumes short-term scenarios with constant time periods but varying output levels.

Why D is correct:

• Marginal costing treats fixed costs as period costs and variable as unit costs, allowing CVP's contribution margin formula (Sales - Variable Costs = Contribution) to directly reveal how total costs behave with output changes.

Why the others are wrong:

• A: Absorption costing spreads fixed overheads over units, obscuring true cost behavior during output changes; time periods add irrelevant variability.
• B: Different time periods violate CVP's short-term, single-period assumption, even with marginal costing.
• C: Absorption costing absorbs fixed costs into unit costs, distorting behavior signals when output varies.

Final answer: D