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Economics (AS & A Level) · May / June 2026 · Paper 34 · Question 6

9708Types of cost, revenue and profit, short-run and long-run production

The minimum efficient scale of firms in an industry has risen. What is likely to have happened to the number of firms and the concentration ratio in the industry to have caused this change?

  1. Adecreased number of firms; decreased concentration ratio
  2. Bdecreased number of firms; increased concentration ratio
  3. Cincreased number of firms; decreased concentration ratio
  4. Dincreased number of firms; increased concentration ratio

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Correct answer: B. decreased number of firms; increased concentration ratio

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