Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to take care of mice [title] Get the right aquarium size. [step] An aquarium can be a good choice to keep mice. If you opt for an aquarium, make sure it's at least 10 gallons (about 38 liters) and has a mesh lid to prevent a mouse from escaping.

Ending1: If you have a large tank, find a tank that's 32 gallons (about 46 liters) and has mesh lid for good ventilation. [substeps] Many aquarium owners opt for aquariums that offer plenty of filtration systems in their tanks. Ending2: Choose a tank that is at least 10 gallons for a small amount of mice but always have at least one inch of air available for maximum ventilation. Be sure the movement of the water level into the tank is optimal before you begin to introduce your mice. Ending3: If you have one to three mice, a bigger aquarium is necessary. [substeps] Four to five mice need at least a 15 gallon (about 58 liters) aquarium. Ending4: Look for sets that are located close to smaller tanks or lower tanks, as many mice don't like standing around in larger tanks. [substeps] If you're keeping mice in smaller aquariums, for instance, aim for 50 gallons (about 40 liters).

Answer format: ending1/ending2/ending3/ending4