Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to change a soft drink fountain syrup bib [title] Locate bib (bag-in-box) connected to the fountain tube. [title] Determine if the bib is actually empty. [substeps] Sometimes air will get caught in the tube and it will appear to be out of syrup when it really isn't.

Ending1: [title] If ready to replace, locate replacement bib. [substeps] Check with your employer whether to empty the box completely before replacing or if it should be replaced before it is completely used. Ending2: Make sure you know the work area well so you can get support while you make the change. [title] Pour the full amount of syrup into your empty fountain tube (original) and place it down with the cap/strainer. Ending3: If it is, clean it and change the bib using the nozzle from 1 end to the other. [title] Change the bib/syrup jug (cap-in-box) connected to the bottom of the fountain and replace the cap on the milk jug. Ending4: [title] Open the bag and then confirm that the bib is actually full. [title] Remove the pump nozzle from its slot.

Answer format: ending1/ending2/ending3/ending4