As output increases, total fixed cost and average fixed cost a. decreases; increases b. increases; decreases c. decreases; does not change

Does not change, decreases

Explanation:

Total fixed cost doesn't vary with output. It remains the same regardless of if output increases or decreases.

Average fixed cost = Total fixed cost / quantity

Because Total fixed cost remains constant and quantity increases, the average fixed cost falls.

Note - the answer isn't in the options provided.

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