Which Statement Accurately Describes the Benefits of Drug Testing

Which statement accurately describes the benefits of drug testing?

A) companies with drug testing policies experience reductions in absenteeism and accidents
B) drug testing is largely an error-free process that assists employers with discipline procedures
C) mandatory random drug testing policies provide an employer with greater freedoms in the surveillance of employees
D) employers can force a drug test after establishing "probable cause",which deters other employees from using drugs while at work