Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to kill fleas and ticks on cats [title] Learn what fleas look like. [step] Most people think that fleas are microscopic, but if you look closely you can see them without a magnifying class. Adult fleas are very small, less than 1/8 inch long.

Ending1: They roll onto your fingertip, usually in clusters. At night, swipe a flea infested towel over your skin to make sure it's not sticking. Ending2: Larger fleas will be white, translucent, and glossy. Therefore if you look closely, you will be able to see the colors of their bodies and skin. Ending3: They're reddish-brown insects and they don't have wings, but they can still jump very high. [substeps] Fleas' bodies are laterally compressed, so their bodies are wider from back-to-belly than they are from side-to-side. Ending4: Fully grown fleas are about the size of a tennis ball. Fleas also look like plantar beetles with a white bond on their abdomen (mucous adenoids.

Answer format: ending1/ending2/ending3/ending4