Which of the Following Actions Are Employers Least Likely to Be

Which of the following actions are employers least likely to be able to take when it comes to drug testing?

A) screen job applicants for drug use before they are hired
B) routinely test employees on an annual basis as part of a physical examination
C) allow supervisors to order employees to be tested for drugs whenever a supervisor thinks it is a good idea
D) have an employee tested after a safety-related accident
E) all of the other choices are fine legally