To make sure noone has an excuse to miss it, here is the link to the Guardian article (and from there on to Neilsen's web data site) on YouTube's movie rental service. Perfect for Section B of your exam - media in the online age, maybe? Remember, this is a vast topic, I can't hope to teach you everything about it, so you will need to be becoming independent learners (not just because you'll get better marks if you write something that doesn't sound like I've just told you what to write) ready for university.
Independence. Independence. Independence. Makes your answers better, makes your grades better, makes you better.