It is a case study analysis. A Memo has to be written that notes the issues in the case study, analyzes the options, and provides a recommendation for the company. Calculations must be done to arrive to the conclusion (calculations should be in the appendix)
All applicants go through a series of tests that check their level of English and knowledge of formatting styles. The applicant is also required to present a sample of writing to the Evaluation Department. If you wish to find out more about the procedure, check out the whole process.