This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology - 1, Subject name: Forensic Medicine
Wax crayons contains 
Select and explain. 
A. Lead, B. Para nitro aniline, C. Beryllium, D. Nitrobenzene
B: Para nitro aniline
Answer: B: Para nitro aniline 
Explanation: #NAME?