With Regard to Participants in Transportation of Goods and Services,which

With regard to participants in transportation of goods and services,which of the following statements is true?

A) Infrastructure owners focus on maximizing the return on their investments.
B) The shipper focuses on maximizing the total landed cost.
C) The purchaser of transportation focuses on obtaining services at the highest possible costs.
D) The primary firm may not use any transportation with a view to reducing cost of operations.