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
Success rate for intraligamentary anaesthesia 
Select and explain. 
A. Injection under strong forward pressure, B. Injection under strong back pressure, C. Injection over supragingival tissue, D. Injection over buccal Labial fold
B: Injection under strong back pressure
Answer: B: Injection under strong back pressure 
Explanation: None