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
Third generation IUCD ? 
Select and explain. 
A. Mirena, B. Nova-T, C. Lippe's loop, D. CuT-200
A: Mirena
Answer: A: Mirena 
Explanation: Ans. is 'a' i.e., Mirena