Does the sentence "Two other major forms of nusach among Ashkenazic Jews are Nusach Sefard (not to be confused with the Sephardic ritual), which is the general Polish Hasidic nusach, and Nusach Ari, as used by Lubavitch Hasidim." answer the question "The term Ashkenazi also refers to what?"

Select from the following.
(a). yes.
(b). no.
(b).