Which of the Following Is Least Likely to Succeed on a Claim

Which of the following is least likely to succeed on a claim under the Americans with Disabilities Act?

A) someone who is unable to walk,but can do all the requirements of a job,although in some cases it might take him a little longer than if he could walk
B) someone who is not hired because of a past drug habit,which he has stayed away from for a couple of years
C) someone who has a documented history of severe asthma,although he or she has not had any problems since moving from New Orleans to Denver
D) someone who has a bad back that prevents him from being able to work at the minimum required speed on an assembly line
E) someone who wears unusual looking thick glasses to correct a rare vision problem; this person has normal vision with the glasses,but most people falsely assume that she cannot see normally,even with the glasses