Answer the following questions in relation to The a2 Milk Company Ltd's segment reporting disclosures. 1. Define an "operating segment" and identify the operating segments of The a2 Milk Company Ltd. (2 marks) 2. What is EBITDA and why is it used? Explain why the four items are excluded. (5 marks) 3. Explain what an ethical investor" is and why the integrated report prepared by The a2 Milk Company Ltd would be of interest to them. (8 marks)