Hello, everyone. I wanted to know a couple of things. Firstly, I've opted for Physics, Chemistry, Biology and Mathematics as my AS & A2 subjects and my first priority is to become a M.D. Is opting for Business Studies, as my 5th subject, advisable or not? Should I? Plus, I have studied Commerce in O level and have an A* in it, so I am not completely unfamiliar with Business subjects. Secondly, is Business Studies a half credit subject at A Level?