Which of the Following Is an Example of Screening

Which of the following is an example of screening?

A) When someone is applying for a job, the employer checks references to determine the previous work habits of the applicant.
B) When an employee purchases group life insurance without taking a physical exam, she knows more about her health than does the insurance company.
C) When someone is considering buying a used car from a dealership, the seller knows the repair history of the car but the potential buyer does not.
D) All of the above are correct.