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: Microbiology
Collection of urine sample of a patient of TB/kidney is done - 
Select and explain. 
A. 24 hrs urine, B. 12 hrs urine, C. in early morning, D. Any time
C: in early morning
Answer: C: in early morning 
Explanation: None