This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Family Systems in India, Subject name: Social & Preventive Medicine
The following is true about the term 'New Families': 
Select and explain. 
A. It is a variant of the 3-generation family, B. It is applied to all nuclear families of less than 10 years duration, C. It is a variant of the joint family, D. It is applied to all nuclear families of less than 2 years duration
B: It is applied to all nuclear families of less than 10 years duration
Answer: B: It is applied to all nuclear families of less than 10 years duration 
Explanation: New family: A family with marriage duration of less than 10 years. - It is a variant of nuclear (elementary/unitary) family. - New family concept is impoant in view of studies related to family planning.