Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to clean a camelbak bladder [title] Mix ¼ cup (59.15 ml) of baking soda with ¾ cup (177 ml) of water per liter volume. [step] The water needs to be hot, but not boiling, as this can damage the bladder. Mix the ingredients until they are well combined.

Ending1: [substeps] Remove the stopper or screw that attaches to the toilet lid once the baking soda mixture is blended. Fill the tub as full as you can comfortably get it. Ending2: [substeps] For example, if your camelbak bladder holds 2 liters (8.45 cups) of water, then mix ½ cup (118. 3 ml) of baking soda with 1 ½ cups (354.8 ml) of water. Ending3: [substeps] If your water request does not include calcium in the baking soda mixture, you can try using white distilled water to remove some of the baking soda after boiling the water. If your water request does not include calcium, leave it in for another 30 minutes before removing it. Ending4: You'll need to stir the water into the urinary tract cavity several times before it reaches a temperature of 109.4 ° f (263.5 ° c). [substeps] Do not put water directly into the urinary tract, as this will cause steam.

Answer format: ending1/ending2/ending3/ending4