Cessna Is Considered the Volume Leader for the Executive -Jet

Cessna is considered the volume leader for the executive -jet market. It has been described as "almost totally vertically integrated." This quote means that Cessna:

A) achieves coordination of production and distribution through ownership, which results in more control.
B) has achieved a high level of social responsibility.
C) has eliminated economies of scale.
D) does not fall under the jurisdiction of any federal regulatory agency.