I'm currently revising for the options topic, now that core geography is over and done with. Over the past year, I've been doing theme 7, theme 10 and theme 11, which are "changing coastline", "tourism" and "retail and urban change". My questions is, can I revise theme 7, 8 and 9 instead. I really, really hate tourism and retail and urban change. If I do that, will it be a problem during the exam? Like, must you take at least one theme on the humanity side?