題目下列何者為引起新型庫賈氏症與狂牛症的致病因子?A.戴奧辛(dioxins)B.多氯聯苯(polychlorinated biphenyls)C.普立昂(prion)D.多環芳香烴化合物(polycyclic aromatic hydrocarbons, PAHs)官方答案C