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
4 components of RCH elaborated ? 
Select and explain. 
A. Prevention of STD, B. Family planning, C. Child survival, D. All
D: All
Answer: D: All 
Explanation: Ans. is *d' i.e., All