Step 1: Classify Lippe's Loop, LNG-20, and Implants.
- Lippe's Loop: A type of intrauterine device (IUD) for contraception.
- LNG-20: A hormone-releasing intrauterine device (IUD).
- Implants: Subcutaneous devices, not intrauterine devices.
Step 2: Identify non-IUD devices.
- Saheli: A contraceptive pill, not an intrauterine device.
Conclusion:
The correct selection is (4) (C), (B), and (D) exclusively.
Final Answer: \[\boxed{\text{The correct answer is (C), (B) and (D) only.}}\]