This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
True statement regarding branchial anomalies 
Select and explain. 
A. Most commonly second arch is involved, B. Cyst is less common than sinus, C. No 1st arch anomalies are seen, D. Internal draining sinuses are most common
A: Most commonly second arch is involved
Answer: A: Most commonly second arch is involved 
Explanation: .