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
New family mean couples under 
Select and explain. 
A. 2 years, B. 5 years, C. Until first child is born, D. 10 years
D: 10 years
Answer: D: 10 years 
Explanation: None