Which of the following statements is true of a short-run market supply curve?
A) The short-run market supply curve is the summation of all the individual firms' supply curves.
B) The short-run market supply curve is the mean of all the individual firms' supply curves.
C) The short-run market supply curve is the summation of all the individual firms' marginal cost curves.
D) The short-run market supply curve is the mean of all the individual firms' marginal cost curves.
E) The short-run market supply curve is vertical.
Correct Answer:
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