Cessna Is Considered the Volume Leader in the Executive Jet

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

A) does not fall under the jurisdiction of any federal regulatory agency.
B) owns several of the entities that would make up the traditional marketing channel.
C) has eliminated economies of scale.
D) has achieved a high level of social responsibility.
E) uses outsourcing for all component parts and materials.