FlyHigh Hot Air Balloon Adventures is an employer with all of its operations based in a U. S. state which has legalized the recreational use of marijuana. Norman is a full-time employee of the business and works as balloon "pilot" and tour guide. Today, Norman's boss observes Norman smoking in his car before work and believes he smells marijuana when Norman walks inside the building. Which of the following actions by Norman's boss is most appropriate from a practical and legal standpoint in this situation? a. Follow company policy and require Norman to pass a fitness-for-duty exam or drug test before he can pilot the first flight scheduled on his shift. b. Announce a random drug test of all the employees currently working, including Norman. c. Supervise Norman closely and go along on his first scheduled flight to watch out for any signs of impairment. d. Supervise Norman as usual – it is not legal for employers in this state to conduct drug tests for marijuana because its status is legal in this state.