Which of the Following Is Not an Example of OCB

Multiple Choice

Which of the following is not an example of OCB?

A) Tell your friends about the company's great work environment.
B) Contribute to a fund for a co-worker to help with medical bills.
C) Discourage a friend from applying for a job at the company.
D) Work over the weekend to make sure a project gets done.
E) Participate in the company's annual holiday secret gift exchange.