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
Non medicated Intra Devices (IUDs) are called as 
Select and explain. 
A. 1st generation IUDs, B. 2nd generation IUDs, C. 3rd generation IUDs, D. Multi – load devices
A: 1st generation IUDs
Answer: A: 1st generation IUDs 
Explanation: None