Last year, it was 63 for an A in Unit 3 and 52 for a C. Because the exam was so easy I reckon it’ll be 65-67 for an A and 55-60 for a C. Last year, for unit 4, an A was 65 and 53 for a C. This year, the exam (imo) wasn’t that hard, it was ok, I reckon it’ll be 63-66 for an A and 50-55 for a C.
Sorry you've not had any responses about this. Are you sure you've posted in the right place? Here's a link to our subject forum which should help get you more responses if you post there.