Please choose the correct ending to complete the given sentence: Health: [header] How to treat a child who can't keep food down [title] Keep your child hydrated. [step] A lot of liquid is lost through vomiting. You should strive to keep your child hydrated for the duration of his sickness.

Ending1: [title] Reinforce your child's bedtime. [step] Speak to your child's pediatrician about whether or not changes to bedtime should be made. Ending2: Water is the best liquid, but varying drinks will help encourage fluid intake. [substeps] Encourage your child to take small, slow sips of liquids frequently, every five to 10 minutes if possible. Ending3: Your child should also drink 8-12 glasses of water every day. This most effectively combines the fluids lost through vomiting with water, and can provide your child with extra strength for vomiting. Ending4: Dehydration can cause a neurodisorder, such as the disorder known as coronary artery disease. [title] Start before your child goes to sleep.

Answer format: ending1/ending2/ending3/ending4