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
On exposure to cold, all are seen EXCEPT:March 2013 
Select and explain. 
A. Increased adrenaline, B. Shivering, C. Increased thyroxine, D. Cutaneous vasodilation
D: Cutaneous vasodilation
Answer: D: Cutaneous vasodilation 
Explanation: Ans. D i.e. Cutaneous vasodilationHypothermiaIt is a condition in which core temperature drops below the required temperature for normal metabolism and body functions which is defined as 35.0 degC (95.0 degF).Symptoms may be sympathetic nervous system excitation:- Shivering,Hypeension,- Tachycardia,- Tachypnea, and- VasoconstrictionThese are all physiological responses to preserve heat. Cold diuresis, mental confusion, as well as hepatic dysfunction may also be present.