Okay. I'm a senior highschool and I'm taking Calculus AB. There is an option for Calculus BC which I'm not taking. I was informed that for my major I need 5 calculus classes. Does that mean calculus ABC and Calculus 2-5 or Calculus A-E or...how does it work? I mean how are the classes named and how are they placed in time? How long are they?