In which costing technique are variable costs charged to cost units and period costs written off against contribution?
A. Contract costing
B. Activity-based costing
C. Process costing
D. Marginal costing
E. Batch costing

Answer:
D. Marginal costing

Explanation:
In marginal costing, only variable costs are charged to cost units, and fixed costs are treated as period costs that are written off against the total contribution of the business.