What is the chief clerks reaction to seeing Gregor for the first time after Gregor's transformation? A. The chief clerk is angry that Gregor is late and threatens to fire Gregor if he doesn't get ready to leave for the office. B. The chief clerk is stunned and slowly leaves the apartment before running down the stairs. C. The chief clerk feels sorry for what has happened to Gregor and offers to help him get back to normal. D. The chief clerk says that he has seen this happen before, which makes Gregor feel better.