This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary Tract, Subject name: Pediatrics
Which of the following conditions can cause transient proteinuria? 
Select and explain. 
A. Fever, B. Dehydration, C. Heavy exercise, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Ans. D. All of the aboveProtein concentration of 100-1000mg/m2/day indicates mild to moderate proteinuria; more than that is heavy proteinuria.Fever, dehydration and heavy exercise may cause transient and mild proteinuria. Mild proteinuria may occur in UTI, hydronephrosis and renal tuberculosis.