A Level Maths looks great on the University application process. I'd also imagine it's more applicable to being a Doctor than Physics would be.
That said, why not take up all 4 and then just drop whichever feels the least relevant after a month or two? The best choice is the educated choice.
That said, why not take up all 4 and then just drop whichever feels the least relevant after a month or two? The best choice is the educated choice.