The CIMA Examiner will prepare five variants of the Ops ICS exam for each quarterly sitting, I recommend that as part of your exam preparation, you review the documentation from the November 2016 sitting.
DO NOT consider the Marici Power case at all! Use each task to review your approach to identifying the requirements within the task, ensure you have the technical knowledge required to respond accordingly to each task or address your own knowledge gaps. In addition to this, you should also be mindful of the areas that the Examiners Report identifies students struggled with (this will be published when available).
Whilst undertaking your own review, identify if any of the technical knowledge required in each task may be relevant to your case study scenario and thus developing your skill of application to the scenario to tailor your answer and improve your marks overall.