Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to care for a mother hamster and her babies [title] Prepare the mother for birth. [step] If you know the mother is pregnant ahead of time, you can work on preparing her for birth. You can tell a hamster is pregnant if she has gained weight and is engaging in nesting behaviors, such as piling wood shavings and other material in one corner of the cage.

Ending1: This may cause the baby (s) to kick the mother after she has given birth. [substeps] You can also fill out a container with changed diapers for the mother to put in the cage. Ending2: Clean her cage and replace all wood shavings or other substrate with clean supplies. [substeps] You should also remove wheels and toys to prevent injury to the babies. Ending3: [title] Build a standing coop for your hamster. [step] House a stand and pen inside of a square coop for your hamster to sleep and play in. Ending4: You can also clean the cage thoroughly every two weeks during pregnancy to prevent changing the color of the bedding. [substeps] Your mother should also remove all material from the cage, including sleeping bags and coats, which can make labor more difficult.

Answer format: ending1/ending2/ending3/ending4