Instructors’ descriptions and reading lists can be found at http://english.berkeley.edu/course_semesters/34 . Note that some other departments offer R&C B courses as well.
For the business major, your 5 on calculus BC means that taking any one of 16B, 1B, 53, or 54 will be sufficient. You may want to choose your math course based on what other major(s) you are considering. If you are considering economics as an alternate major, considering taking 53 and 54 to give the option of choosing the more mathematical track.
You may want to try the old 1A and 1B exams to be sure that you know the material:
https://math.berkeley.edu/courses/archives/exams
And the math department’s page on AP credit:
https://math.berkeley.edu/courses/choosing/ap-exams