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
The nipple is supplied by which of the following intercostals nerve? 
Select and explain. 
A. T3, B. T4, C. T5, D. None of the above
B: T4
Answer: B: T4 
Explanation: The breast is innervated by anterior and lateral branches of the fouh to sixth intercostal nerves, which carry sensory and sympathetic efferent fibres. The nipple is supplied from the anterior branch of the lateral cutaneous branch of T4