No, in secion 4 u have to talk about what they actually ask you, just REFER to your case study. But dont base your entire answer on it, just use it as evidence to support your answer.
another thing can we use 1 case study to answer one part of the question and use another to answer the other part. E.g In section IV can we use BHP case study to answer the ER part of the uestion and use billabong to answer the global business part of the question..do u guys get what i mean?