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
First external sign of putrefaction is: March 2004 
Select and explain. 
A. Marbling of skin, B. Distension of skin, C. Protrusion of tongue, D. Greenish discoloration of abdomen
D: Greenish discoloration of abdomen
Answer: D: Greenish discoloration of abdomen 
Explanation: Ans. D i.e. Greenish discoloration of abdomen