At which stage of production should a firm shut down? when

Analyze the question: This asks about the shutdown condition of a firm. The question is slightly garbled, but the idea is clear: when should a firm stop producing in the short run?

Concept: In the short run, a firm has fixed costs it must pay whether or not it produces. So it compares:

• Price (AR) with Average Variable Cost (AVC)

The rules are:

• If Price ≥ AVC, the firm covers its variable costs and contributes toward fixed costs, so it should keep producing (even if it makes a loss).
• If Price < AVC, the firm cannot even cover its variable costs. Each unit produced adds to its losses, so it should shut down.

Checking the options:

• A. AVC = ATC: This only means average fixed cost is zero. It is not a shutdown rule.
• B. AVC: Incomplete, with no condition stated.
• C. AVC > price: This is the shutdown condition. Variable costs are not covered by revenue.
• D. AVC = MC: This is the point where AVC is at its minimum. It is the lowest point of the AVC curve, and the firm shuts down if price falls below this level, but the equality itself is not the shutdown condition.

Answer: The firm should shut down when AVC > price, which is option C.

Tip: Remember "P < AVC → Shut down". Think of it this way: if you cannot even pay for the ingredients (variable costs), there is no point cooking. If price is above AVC but below ATC, keep producing in the short run to reduce your losses. Fixed costs are owed regardless.