Which of the Following Guidelines Is Suggested for Implementing a Drug-Testing

Which of the following guidelines is suggested for implementing a drug-testing program?

A) Assume employees are drug-free until proven otherwise.
B) Use any type of urinalysis,even the most mediocre method,as long as it gets done.
C) Make positive test scores a BFOQ where possible.
D) Use monitored laboratories that employ nonblind testing to ensure the integrity of the testing procedures.