This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Medico legal procedures, Subject name: Forensic Medicine
Law under oath is not necessary in - 
Select and explain. 
A. Wound ceificate, B. Medical ceificate, C. Postmoem ceificate, D. Expe opinion expressed in a treatise
D: Expe opinion expressed in a treatise
Answer: D: Expe opinion expressed in a treatise 
Explanation: Law under oath is not necessary in expe opinion expressed in a treatise Ref:synopsis of forensic medicine (Dr.K.S.Narayan Reddy), pg no:9,28th edition.