Which excerpt from "there’s a man in the habit of hitting me on the head with an umbrella" illustrates why the man most likely continues to hit the narrator? - "it was the very same man who now, as i'm writing, keeps whacking me, mechanically and impassively, with an umbrella." "on that occasion i turned around filled with indignation: he just kept on hitting me. i asked him if he was crazy: he didn’t even seem to hear me." "many times i have let him have it with punches, kicks, and even - god forgive me - umbrella blows. he would meekly accept the blows. he would accept them as though they were part of his job." "and this is precisely the weirdest aspect of his personality: that unshakable faith in his work coupled with a complete lack of animosity."