Task: Question Answering
Input (English): Question: From the point of view of the metabolism of xenobiotics, what is the cause of the hepatotoxicity and the carcinogenic action of aflatoxins? 
 Options:  <1> Its hydrolysis releases aromatic amines. <2> Its metabolism of phase II generates a nitrenium cation, which is cytotoxic by reacting with DNA. <3> Its hepatic metabolism originates an epoxide, which forms a covalent bond with DNA guanine. <4> Your metabolism leads to a reactive species through a process of reductive bioactivation. <5> They facilitate the information of reactive oxygen species through a radical mechanism.
Output (English): 3