Read the following passages and identify the problems in reasoning.
  
Some people say that calling people names because of the way they look is offensive. My friend is very overweight and people call him names for being fat. He says he doesn't mind as he finds horrible things to call back. This shows there is no harm in calling people names as they can just retaliate if they want to.
A、false correlation
B、insufficient number of evidence
C、lack of representativeness
D、no error