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: Anatomy
Massage in which triangle of neck is of diagnostic and therapeutic value in arrhythmias? 
Select and explain. 
A. Occipital triangle, B. Carotid triangle, C. Diagastric triangle, D. Muscular triangle
B: Carotid triangle
Answer: B: Carotid triangle 
Explanation: None