Multiple choice questions

Ok, so we all know there will be 20 multiple choice questions worth 2 marks each, so 40% is available here.

However, how are the 2 marks for each question awarded?

Is it a case of as long as you get the correct answer (with or without workings) then you will get 2 marks?

Or, do you get 1 mark for the correct answer and 1 mark for the workings?

So if you didn’t know any of the answers and couldn’t provide any workings at all, and you just went down and guessed all the answers (showing no workings at all) then you would only get 1 mark for each question? So you could answer all of them correctly (by luck) and only score 20%?

Or will you get the full two marks as long as the answer is correct, regardless of workings etc?

Thanks.