问题如下：
Which of the following is the best description about a strategy of low cost competition?
选项：
A. Products and services should be distinctive.
B. Operational efficiency can be promoted by managerial incentives.
C. Sales volume is typically modest.
解释：
B is correct.
A low cost strategy company must have appropriate managerial incentives to improve operating efficiency. In a low-cost strategy, the company seeks to have the lowest costs of production in the industry, offer the lowest prices and generate enough volume to make a superior return. The success of differentiation strategy is dependent on product development and creative marketing.
请问，规模经济情况下不是能够帮助降低成本吗？如果销售体量达到一定规模，推动规模经济达到成本降低。想请教一下c为什么不对呢？
