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: Physiology
When NaC1 is injected in the internal carotid aery, it causes release of ADH by acting on : 
Select and explain. 
A. Paramedian nucleus, B. Anterior pitutary, C. Pa raoptic nucleus, D. Supraoptic nucleus
D: Supraoptic nucleus
Answer: D: Supraoptic nucleus 
Explanation: D i.e. Supraoptic nucleus