This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid and electrolytes, Subject name: Medicine
Sign of shock is- 
Select and explain. 
A. Hypotension, B. Bradycardia, C. Polyuria, D. Chest pain
A: Hypotension
Answer: A: Hypotension 
Explanation: Signs and symptoms of shock vary depending on circumstances and may include: Cool, clammy skin Pale or ashen skin Bluish tinge to lips or fingernails (or gray in the case of dark complexions) Rapid pulse Rapid breathing Nausea or vomiting Enlarged pupils Weakness or fatigue Dizziness or fainting Hypotension Changes in mental status or behavior, such as anxiousness or agitation Ref Davidson 23rd edition pg 345