Which of the Following May Be a Clue That One

Which of the following may be a clue that one of your relationships is approaching depenetration?

A) You find out from a mutual acquaintance that your best friend broke up with his girlfriend three days ago.
B) Your roommate reveals to you why he and his father aren't currently on speaking terms.
C) Your new coworker asks you about the work habits of the people on his team as he tries to get a feel for the roles of everyone in the office.
D) The classmate you have been sitting beside all semester tells you what she thinks about the recent election results.