In an Employment Interview,which of the Following Would Be the Best

In an employment interview,which of the following would be the best answer to the question,"What is your greatest weakness?"

A) "I eat too much chocolate."
B) "I hate to sound so sure of myself, but I've been a receptionist for so many years that I don't think I have any weaknesses as far as this job goes."
C) "I had some troubles in my last job, but they were all caused by my boss, who was such a micro-manager."
D) "Sometimes I tend to be too much of a perfectionist, so I'm hesitant to let my subordinates work without close supervision. But I know it's important to let them have autonomy, so I'm learning to give them more chances to work independently."