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
The following are true of primary thyrotoxicosis, EXCEPT 
Select and explain. 
A. Tremors, B. Warm extremities, C. Diarrhea, D. Intolerance to cold
D: Intolerance to cold
Answer: D: Intolerance to cold 
Explanation: None