___ we know, in a chemical change, energy cannot be created, ____.

A．Which, nor can it be destoyed

B．As, neither it can be destroyed

C．As, neither is it able to be destoryrf

D．What, nor is destoryed

饲料和饲料添加剂在销售时可适当作预防或者治疗动物疾病的说明或者宣传。