Question: How can I mount a poster in my bedroom wall?

  Options: 
 A. Using household glue, apply glue to the backside of the poster. Afterwards, press the poster onto the wall, applying enough pressure to make it stick, and then let it dry
 B. Using double sided tape, apply tape to the corners and middle of the poster's backside. Then press the taped side of the poster on the wall where you want it, smoothing it out carefully.
Answer: B