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
Average weigth of fetal lung after respiration is 
Select and explain. 
A. 30-40gm, B. 40-50 gm, C. 60-70 gm, D. 90-100gm
C: 60-70 gm
Answer: C: 60-70 gm 
Explanation: Foder's test The weight of the respired lung will be twice the weight of unrespired lung. This is due to the increased blood flow to the lung. This is not a conclusive evidence of establishment of respiration. Average weight of fetal lung is 30-40gm before establishment of respiration and will become 60-70gm after respiration. Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 348