This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary tract, Subject name: Anatomy
Bence Jones proteins are 
Select and explain. 
A. Light chain, B. Heavy chain, C. Medium chain, D. All of the above
A: Light chain
Answer: A: Light chain 
Explanation: refer Robbins 9/e p965 Bence Jones proteins are made of light chain