Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to raise a basset hound [title] Begin training as soon as possible. [step] As soon as you bring your puppy home, you should begin training them. Establish a pattern from the beginning by bringing your outside to see if they need to go potty.

Ending1: This routine is especially important if your puppy is old enough to be potty trained and will need to potty-sit. [substeps] Getting the puppy used to a potty will happen easier for both the puppies and you once they grow up. Ending2: [substeps] Unless you are feeding, training, or playing with your basset, use a baby gate to confine your puppy to a small section of the house, like the laundry room, for the first few days. This will enable you to supervise and monitor your puppy to see when your puppy needs to use the restroom. Ending3: Some purebred dogs learn to go potty around age three, while others take their time getting used to it. A simple rule of thumb is that ten minutes each day will suffice. Ending4: In addition, you should clean the house whenever you bring your basset dog home, or whenever you brush their fur. [substeps] Regardless of how well your dog adapts to the environment, you should begin training early.

Answer format: ending1/ending2/ending3/ending4