Russian writer Sholokhov told a story: A rabbit ran wildly and met a wolf on the road. The wolf said, "Why are you running so eagerly?" The rabbit said, "They will catch me and give me a hand. " The wolf said, "It's the camel that catches the palm, not you. " The rabbit said, "If they catch me, you can see how I can prove that I am not a camel. ". which is the rabbit most worried about in this story? ['As long as it is a camel.', 'Even if it is not a camel, it may be nailed.', 'If nailed, it must be a camel.', 'Without a palm, it would not be a camel.']