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: Social & Preventive Medicine
Riboflavin is an important group of water soluble vitamin. Cereals and pulses are relatively good sources of Riboflavin. Most common lesion associated with Riboflavin deficiency, which can also be used as an index of state of nutrition of group of children is 
Select and explain. 
A. Cheilosis, B. Angular stomatitis, C. Glossitis, D. Nosolabial dyssberia
B: Angular stomatitis
Answer: B: Angular stomatitis 
Explanation: None