做对了 但b的知识点是什么意思，以及B知识点没找到

问题如下：

Q. Diseconomies of scale most likely result from:

选项：

A.specialization in the labor force.

B.overlap of business functions and product lines.

C.discounted prices on resources when buying in larger quantities.

解释：

B is correct. As the firm increases output, diseconomies of scale and higher average total costs can result when business functions and product lines overlap or are duplicated.