Fact Pattern 35-2A (Questions A17-A18 Apply)

Fact Pattern 35-2A (Questions A17-A18 apply)
Beth,who has a disability,is an employee of Corporate Office Company (COC) .After the installation of new doors on COC's building,Beth finds it nearly im?possible to get in and out.For repeatedly failing to be on time,COC replaces Beth with Dian,who does not have a disability.
-Refer to Fact Pattern 35-2A.To successfully defend against Beth's claim,COC will have to show that

A) Beth consistently failed to meet the essential requirements of her job.
B) COC cannot make changes to the doors without undue hardship.
C) Dian is qualified for Beth's position.
D) the doors were not installed as an act of intentional discrimination.