单选题 Which of the following most accurately describes the shape of the average fixed cost (AFC) curve? The AFC curve:
  • A. is always below the average variable cost curve.
  • B. has the same shape as the average total cost curve.
  • C. becomes flatter as output increases.
【正确答案】 C
【答案解析】The AFC curve declines initially, but as output increases it flattens because a fixed cost is being averaged over more and more units of output.