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
Pit latrine has depth of----feet – 
Select and explain. 
A. 2–4, B. 4–6, C. 10-Jun, D. 10–12
D: 10–12
Answer: D: 10–12 
Explanation: None