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
Tachycardia in a patient in shock is response to: 
Select and explain. 
A. Hypotension, B. Vasoconstriction, C. CNS anoxia, D. Anxiety
C: CNS anoxia
Answer: C: CNS anoxia 
Explanation: None