Finish the following sentence with the best choice: How do I make sure that the plank is perpendicular to the beam ?

Choices:
- Push a side of a mitre square against  the beam and the other side of the miter square against the plank.
- Push a side of a mitre square against  the beam and the same side of the miter square against the plank.

Answer:
Push a side of a mitre square against  the beam and the other side of the miter square against the plank.