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: Social & Preventive Medicine
An hour sweat rate should be MCARDLE's maximum allowable sweat rate – 
Select and explain. 
A. 3.5 litres, B. 21 litres, C. 2.5 litres, D. 4.5 litres
D: 4.5 litres
Answer: D: 4.5 litres 
Explanation: None