单项选择题

安吉白茶中( )含量较高,所以鲜爽度特别好。Anji white tea has a high content of (), so its freshness is particularly good. A.
氨基酸 Amino acid B.
咖啡碱 Caffeine C.
茶多酚 Tea polyphenols D.
维生素 Vitamins

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