Ok, thank you!
Also, the extended response is made up of two topics, yeah? So what if we only use a case study for one of the topics (e.g. the question is on employment relations and global business, and someone only does a case study on employment relations)
How many marks are you likely to lose?
EDIT: ALSO
I just looked at some past sample responses, and some did up to three case studies on the ONE topic (e.g. 3 case studies on just employment relations) !! Is it possible to get full marks with just one case study per topic? Because I don't think more than one case study relevant to both topics is necessary, and just wasting your time.