问题
单项选择题
Which of the following statements least accurately describes why firms can coordinate economic activity more efficiently than markets Firms can achieve:（）
A. economies of scope.
B. diversification benefits.
C. economies of scale.
答案
参考答案：B
解析：
Firms can often coordinate economic activity more efficiently than markets because firms can reduce the costs of market transactions, and they can achieve economies of scale, scope, and team production.