In the context of medical examinations and inquiries in the selection process, which of the following is true of the Americans with Disabilities Act (ADA)? Select one: a. Pre-employment drug tests are considered to be medical exams under the ADA. b. The ADA prohibits a company from asking job applicants any question related to current or past medical history until a conditional job offer has been made. c. Hiring an individual because of drug use for treatment, medical, or nonmedical purposes violates the ADA. d. The ADA authorizes the use of pre-employment medical exams before a job has been conditionally offered to a job applicant