All of the Following,except One,are Examples of Pecuniary Economies of Scale.Which

Multiple Choice

All of the following,except one,are examples of pecuniary economies of scale.Which is the exception?

A) A lower interest rate paid on money borrowed.
B) The ability to sell the by-products of production.
C) The ability to use specialized inputs such as a robotics assembly line.
D) The ability to obtain lower prices by buying in bulk.