问一道题：NO.PZ2017092702000038 [ CFA I ]

IntervNomin A is correct. Ornscales sort ta into categories thare orrewith respeto some characteristic anminvolve numbers to intify categories but not assure ththe fferences between scale values are equal. The buy rating scale incates tha storanke5 is expecteto perform better tha storanke4, but it tells us nothing about the performanfferenbetween stocks ranke4 an5 comparewith the performanfferenbetween stocks ranke1 an2, anso on 老师，能否能把这个知识点几个排序分别介绍一下，感觉英文和这个排序有点对不上，有没有更好的记忆方法。