Variable costs . remain constant in total and vary per unit. remain constant per unit and vary in total. remain constant both in total and per unit. vary both in total and per unit

vary both in total and per unit

Explanation:

Variable costs are the costs that vary depending on the level of output.

Examples of variable costs are: energy used to power machines involved in the production process, labor costs, and maintenance costs.

Variable costs vary both in total and per unit.

none

explanation:

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answernet income for 2017 will be greater if the inventory quantity declines;