单选题:实验证明:茄红素具有防止细胞癌变的作用。近年来W公司提炼出茄红素,将其制成片剂。希望让酗酒者服用以预防饮酒过多引发的癌症

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题目内容:
实验证明:茄红素具有防止细胞癌变的作用。近年来W公司提炼出茄红素,将其制成片剂。希望让酗酒者服用以预防饮酒过多引发的癌症。然后,初步的试验发现,经常服用W公司的茄红素片剂的酗酒者反而比不常服用W公司的茄红素片剂的酗酒者更易于患癌症。
以下哪项最能解释上述矛盾
Ⅰ.癌症的病因是综合的,对预防药物的选择和由此产生的作用也因人而异
Ⅱ.酒精与W公司的茄红素片剂发生长时间作用后反而使其成为致癌物质
Ⅲ.W公司生产的茄红素片剂不稳定,易于受其他物质影响而分解变性,从而与身体发生不良反应而致癌;自然茄红素性质稳定,不会致癌 A.只有Ⅰ和Ⅱ
B.只有Ⅰ和Ⅲ
C.只有Ⅱ和Ⅲ
D.Ⅰ、Ⅱ、Ⅲ

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