This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
[{'content': 'Decomposition of a body produces green colour due to hydrogen sulphide accumulating. Where does this colour change first occur? \nSelect and explain. \nA. Face, B. Iliac fossa, C. Around umbiticus, D. Palms and soles', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Right Iliac fossa is the first region to show this discolourization. Because\xa0Caecum lies superficially in Right ILiac fossa.', 'role': 'assistant'}]