Which high school class should I take?

I'm going to be a senior this fall. Junior year, I took AP Calculus AB and I'm positive I got a 4 or a 5 on the AP test. Should I take AP Calculus BC this fall or would it be better for me to not take a math class and take something else, like AP Environmental Science? If it helps, I want to go to UCI, and I want to be something health-related (doctor, pharmacist, veterinarian, etc). Thanks for the help!