单选题 According to basic Economics Theory, As compared with acting independently, a group of oligopolistic companies operating with perfect cooperation will most likely experience an increase in :

A、

A. both output and prices.
B、

B. neither output nor prices.
C、

C. prices and a decrease in output.

【正确答案】 C

【答案解析】As the companies agree to restrict output, market price will rise above average total cost and joint economic profits will accrue.