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
In angina pectoris, the pain radiating down the left arm is mediated by increased activity in afferent (sensory) fibres contained in the 
Select and explain. 
A. Carotid branch of the glossopharyngeal nerve, B. Phrenic nerve, C. Vagus nerve & recurrent laryngeal nerve, D. Thoracic splanchnic nerve
D: Thoracic splanchnic nerve
Answer: D: Thoracic splanchnic nerve 
Explanation: D. i.e. Thoracic splanchnic nerves