Which of the Following Involves the Use of a Secondary

Which of the following involves the use of a secondary source?

A) Talking to the entry-level employees about why the duties are not being properly executed
B) Surveying other companies who outsource the kinds of duties you are looking to outsource
C) Reading a journal article about the perceived versus actual cost effectiveness of outsourcing
D) Discussing the situation with your boss
E) Speaking to outsourcing service providers about some options