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
Which is excreted typically in lead poisoning: 
Select and explain. 
A. Urobilinogen, B. Coproporphyrin, C. Bilirubin, D. Bile salts
B: Coproporphyrin
Answer: B: Coproporphyrin 
Explanation: B i.e. Coproporphyrin