Finish the following sentence with the best choice: To make a magnetic clasp for the wooden wallet,

Choices:
- take two magnetic strips and glue each side to the interior back and the interior of the flap. Make sure that the magnetic strips align when closed.
- take two magnetic strips and glue each side to the exterior back and the exterior of the flap. Make sure that the magnetic strips align when closed.

Answer:
take two magnetic strips and glue each side to the interior back and the interior of the flap. Make sure that the magnetic strips align when closed.