Here's a problem to solve: A scientist lost the cap to an ammonia bottle, so she moved the ammonia into a clean container with a lid. What else should she do to be safe?

Among the 4 following options, which is the correct answer?

- A: Recycle the old ammonia bottle.
 
- B: Label the new container clearly.
 
- C: Heat the new container to seal the lid.
 
- D: Store the new container in the refrigerator.
 