Finish the following sentence with the best choice: How can I make a bag dispenser holder?

Choices:
- open top of ziplock bags box, and tack the flap into the inside of a cabinet door to hold it in place and store it.
- open top of ziplock bag, and tack the bag into the inside of a cabinet door to hold it in place and store it.

Answer:
open top of ziplock bags box, and tack the flap into the inside of a cabinet door to hold it in place and store it.