中等ECON-PRDC-007
A logistics company in Hong Kong experiences constant returns to scale in the long run. Its long-run average cost (LRAC) curve is:
A. Upward-sloping
B. Downward-sloping
C. Horizontal✓ 答案
D. U-shaped
解說
Constant returns to scale means doubling all inputs doubles output, so average cost remains constant at all output levels — a horizontal LRAC.