【单选题】Mrs. Smith operates a business in a competitive market. The current market price is $8.10. At her profit-maximizing level of production, the average variable cost is $8.00, and the average total cost ...
A.
continue to operate in the short run but shut down in the long run.
B.
shut down her business in the short run but continue to operate in the long run.
C.
continue to operate in both the short run and long run.
【判断题】Later, mother bought me a pair of size 5, stuffing one shoe with toilet paper so it would fit my smaller foot. I went to the first dance. I managed to take a turn with a boy so tall that I couldn’t...