Question: To make a piping bag,

  Options: 
 A. open a ziplock bag, put it into a jar folding the top over the top of the jar, then fill it with your filling, pull out of the jar, zip lock it, cut a hole in one of the bottom corners, and squeeze the bag to push your filling out.
 B. open a ziplock bag, put it into a jar folding the top over the top of the jar, then fill it with your filling, pull out of the jar, cut a hole in both of the bottom corners, and squeeze the bag to push your filling out.
Answer: A