Fill in the letter of the word that best fits in each sentence. Use each letter only once. 
Definitions:
Variable Direct Materials Cost
Refers to the fluctuating cost of raw materials that directly goes into producing a product, changing as the volume of production varies.
Contribution Margin
The amount by which the sale of a product exceeds its variable costs, contributing to covering fixed costs and generating profit.
Activity Rate
The estimated activity cost divided by estimated activity-base usage.
Production Setup
The preparation and arrangement of tools, machines, and equipment necessary for the commencement of production operations in a manufacturing environment.
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