This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thanatology, Subject name: Forensic Medicine
[{'content': 'Which of the following is not a effect of gas formation in putrefaction? \nSelect and explain. \nA. Blood-tinged froth from nostrils and mouth, B. Blisters in thigh, C. Rigidity, adduction and flexion of limbs, D. Postmoem delivery of fetus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Blood tinged froth exudes from nostrils and mouth (i.e. postmoem purge) due to presence of gas in abdomen Blisters in thigh are termed as postmoem blisters which are also due to gas formation. Rigidity : abduction and flexion of the limbs occurs due to inflation of the tissue with gases. Anus & uterus may prolapse due to gas formation and postmoem delivery of a fetus takes place.', 'role': 'assistant'}]