Select the correct answer below:
a. as output increases average cost declines.
b. this is true and is depicted by the purple curve, which show a declining average cost as output increases.
c. the purple curve does not denote marginal revenue.
d. as demand increase price declines.
e. the marginal revenue curve shows a declining marginal revenue position, which is falling at a greater rate than average cost and marginal cost, indicating an inability to price in relation to average cost.
f. as output increases marginal cost declines."