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
Widmark's formulae are used for estimation of 
Select and explain. 
A. Cyanides, B. Alcohol, C. D.D.T., D. Teeth
B: Alcohol
Answer: B: Alcohol 
Explanation: B i.e. Alcohol