What Is the Major Difference Between Vertical Integration and Outsourcing

What is the major difference between vertical integration and outsourcing?

A) Vertical integration is ownership of a part of the supply chain,outsourcing has no ownership.
B) Outsourcing is ownership of a part of the supply chain,vertical integration has no ownership.
C) Outsourcing uses external suppliers to perform some production/service functions while production/service functions through vertical integration are strictly in-house.
D) Outsourcing is a long term operations strategy where vertical integration is short term.
E) Vertical integration is usually limited to services,where as outsourcing usually deals with production of goods.