During a Hiring Interview, Which Response by a Nursing Applicant

During a hiring interview, which response by a nursing applicant should indicate that the applicant operates from an ethical egoism framework?

A) "I would want to be treated in a caring manner if I were mentally ill."
B) "This job will pay the bills, and the workload is light enough for me."
C) "I will be happy caring for the mentally ill. Working in med/surg kills my back."
D) "It is my duty in life to be a psychiatric nurse. It is the right thing to do."