What is the correct answer if marginal cost is rising in a competitive firm's short-run production process and its average variable cost is falling as output is increased, then
a. marginal cost is above average variable cost.
b. marginal cost is below average fixed cost.
c. marginal cost is below average variable cost.
d. average fixed cost is constant.

Gdp has grown in a country at 3% per year for the last 20 years. the labor force has grown at 2% per year and the quantity of physical capital has grown at 4% per year. a 1% increase in average physical capital per worker (other things equal) raises productivity by 0.3%. average education has not changed. how much has growing physical capital per worker contributed to productivity growth in this country? choose the correct answer from the following choices, and then select the submit answer button. answer choices 0.3% 0.6% 3.0% 6.0%