Provide a detailed explanation of how to make a vegan apple pie, including the ingredients and step-by-step instructions. Your response should contain at least 5 sentences. Highlight at least 2 sections in your answer with markdown, i.e., *highlighted section*. Include keywords *vegan*, *apple*, *pie* in the response. At the end of your response, please explicitly add a postscript starting with *P.S.*.
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