The question below comprises four scattered segments of a paragraph. Identify from among the four choices the sequences that correctly assemble the segments and complete the paragraph.

A. The main difference is that efficiency is a ration and effectiveness is not.

B. But they reach efficiency in a different way than American businesses.

C. The Japanese are very efficient and such concepts as ‘just in time’ are a witness to their efficiency.

D. They reach efficiency through the route of effectiveness.