In which of the following situations would using the word "you" typically NOT be appropriate? (Points: 5) a) When you must inform a subordinate that she has inadvertently made a costly error. b) When you must inform a subordinate that you have passed her idea on to your superior. c) When you want to focus on what the reader will gain from your new policy. d) When you want to congratulate your subordinate for her promotion.

Note- Also mention why the other 3 options are incorrect.