Variable costs include all the costs of production that increase with the quantity produced. Thus, option B is correct.
Making anything from raw materials or components is the process of producing something. In other words, manufacturing uses resources to produce a result.
Variable cost is the cost that keeps on changing and the cost may include labor, electricity, or the cost of raw materials.
If the price of anything will increase, so will the variable cost and as the quantity increase, the rate will also increase. Therefore, option B is the correct option.
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The question is incomplete, the complete question will be:
A. Fixed costs
B. Variable costs
C. Average costs
D. Average variable costs