Finish the following sentence with the best choice: How to mail a letter.

Choices:
- Take your pre-addressed envelope to the US Post Office near you, purchase a stamp, place on envelope and drop in mail chute.
- Take your pre-addressed envelope to the US Post Office near you, purchase a stamp, drop envelope in mail chute.

Answer:
Take your pre-addressed envelope to the US Post Office near you, purchase a stamp, place on envelope and drop in mail chute.