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: Surgery
When the rectum is inflated with air through a rectal tube, pain and tenderness occur in the right iliac fossa in case of appenidicitis. This is known as? 
Select and explain. 
A. Aaron's sign, B. Battle's sign, C. Bastedo's sign, D. Mc Burney's sign
C: Bastedo's sign
Answer: C: Bastedo's sign 
Explanation: Ans. is 'c' i.e., Bastedo's sign