Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to clean a mother dog after she gives birth [title] Remove all soiled items after the birth. [step] After the mother dog is finished giving birth, you should remove all the soiled newspaper, blankets, or other material. This material will contain blood, fluid, and tissue from the birth.

Ending1: [substeps] For example, if you have soft tissue you can place it on top of the mother's belly. This will catch any fluids that will drip through the mother's womb as she gives birth. Ending2: [substeps] The mother will be able to clean the soiled items more easily later in the pregnancy. [title] Wash the mother dog's underarms, legs, and abdomen. Ending3: [substeps] Removing the soiled items promptly reduces the risk of contamination and infection. [title] Fix the mother and her litter a clean, soft bed. Ending4: [substeps] If you have any soiled items after the birth, place them in a warm environment instead of the cool or hot house you are now in. [title] First, remove all soiled clothing.

Answer format: ending1/ending2/ending3/ending4