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: Dental
In mandibular primary second molar true statement is 
Select and explain. 
A. ML is largest cusp and distobuccal is smallest, B. All buccal cusp are fo same size> all lingual cusp are of same size, C. DB is largest cusp, D. All of the above
B: All buccal cusp are fo same size> all lingual cusp are of same size
Answer: B: All buccal cusp are fo same size> all lingual cusp are of same size 
Explanation: None