Which of the Following Scenarios Best Illustrates Outsourcing

Which of the following scenarios best illustrates outsourcing?

A) Octagon Inc., an American smartphone company, exports its products to different countries in Europe and North America.
B) Hexagon Corp. entices its employees to volunteer to leave the organization by offering severance benefits.
C) Oasis Inc., an American publishing company, transfers the task of payroll processing to Crimson Inc., an American HR consulting company.
D) Eagle Inc. rehires retirees on a part-time or temporary basis to fill talent gaps in the organization.