One Reason Some Manufacturing Companies Have Moved Production from Overseas

One reason some manufacturing companies have moved production from overseas locations back to the United States is an increasing preference by U.S.consumers for products made in the United States.Assuming that managers at these companies used all available information,including the increased preference by U.S.consumers for domestically produced,when making the decision to move production back to the United States exemplifies which key economic idea?

A) People are rational.
B) People respond to economic incentives.
C) Optimal decisions are made at the margin.
D) The market system relies on the principle of voluntary exchange.