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: Pathology
Taurodontism is characterized by: 
Select and explain. 
A. Hypercementosis, B. Elongated wide pulp canals and short roots, C. Obliterated pulp chambers with secondary dentine deposition, D. Rootless teeth with thin shell of enamel
B: Elongated wide pulp canals and short roots
Answer: B: Elongated wide pulp canals and short roots 
Explanation: None