Finish the following sentence with the best choice: How do I prepare a container to take care of ducklings?

Choices:
- Line a cardboard box with clean cutting board and place ducklings into the box about 24 hours after they're born, add a 100-watt bulb inside the box to keep them warm.
- Line a cardboard box with clean towels and place ducklings into the box about 24 hours after they're born, add a 100-watt bulb inside the box to keep them warm.

Answer:
Line a cardboard box with clean towels and place ducklings into the box about 24 hours after they're born, add a 100-watt bulb inside the box to keep them warm.