answer: #Person2# tells #Person1# getting 166 credits in four years is required for a bachelor degree.
documents: #Person1#: Excuse me. May I ask you some questions?
  #Person2#: Sure. What do you want to know?
  #Person1#: Could you please tell me how many credits would be required for a bachelor's degree?
  #Person2#: Well, you have to get 166 credits, including required courses and optional courses.
  #Person1#: OK. And how long does it take to get a bachelor's degree?
  #Person2#: It can be completed in four years normally.
  #Person1#: I see. Thank you very much.
  #Person2#: You're welcome.