The independent proof method and the fallacy method are two methods of indirect argumentation. Among them, the independent proof method is to prove that the contradicted proposition is true, thereby determining the refuted proposition to be false. The fallacy method is to be refuted. The proposition is true, leading to ridiculous conclusions, thus proving that the proposition to be refuted is false. According to the above definition, which of the following is the independent proof method used in the following arguments? ['A: Humans evolved from apes. B: Impossible! Has anyone seen this, and which monkey has become a human?', 'A: Heaven does not give birth to Zhong Ni, and eternity is like a long night. B: Does anyone before Zhong Ni live in darkness?', 'A: Human nature is evil. B: If human nature is evil, where does the moral code come from?', 'A: Sufficient food and clothing is a prerequisite for talking about morality. B: Sufficient food and clothing is not a prerequisite for talking about morality. In the past, societies that have not solved the problem of clothing and food are talking about morality.']