Why Are Performance Problems Best Handled in Face-To-Face Meetings

Why are performance problems best handled in face-to-face meetings?

A) The opportunity to read nonverbal signals is strong
B) Face-to-face meetings allow for discussion
C) A face-to-face meeting is less embarrassing for the person with the performance problem
D) Face-to-face meetings take less planning that written communications
E) A message is sent to those who see the meeting taking place that positive action is occurring, thus improving the moral of the entire department.