answer: Mr. Li tells #Person1# #Person1# needs 120 units to complete a Bachelor's degree which normally takes four years.
documents: #Person1#: Excuse me. Mr. Li. May I ask you some questions?
  #Person2#: Sure. Take a seat, please. What would you like to know?
  #Person1#: Can you tell me how many credits would be enough for a Bachelor's degree?
  #Person2#: A Bachelor is awarded to a student who successfully completes over 120 units, including general and specific requirements, for his or her undergraduate major and elective courses.
  #Person1#: How long does it take to earn a Bachelor's degree?
  #Person2#: Normally it can be completed in four years.