When production level is zero then fixed cost is 1.) Zero
2.) Negative
3.) Positive
4.) Equivalent to variable cost ​

positive

Explanation:

For example, if there are only fixed costs associated with producing goods, the marginal cost of production is zero. If the fixed costs were to double, the marginal cost of production is still zero. The change in the total cost is always equal to zero when there are no variable costs.

zero

Explanation:

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