This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexual offences and infanticide, Subject name: Forensic Medicine
Wredin's test is significant in live born fetus related to 
Select and explain. 
A. Lungs, B. Stomach, C. Skull, D. Middle ear
D: Middle ear
Answer: D: Middle ear 
Explanation: Wredin's test After bih, the gelatinous substance in the middle ear is replaced by air through Eustachian tube. This is now considered as not a reliable test. Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 351