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: Unknown
All of the following are present in sweat except - 
Select and explain. 
A. Calcium, B. Lactic acid, C. Urea, D. Uric acid
D: Uric acid
Answer: D: Uric acid 
Explanation: Ans D- Uric acidnote : calcium is excreted in sweat daily by 140 mg/day