48.下列何種囊腫是屬於發育性囊腫(developmental cyst)? ①齒源性角化囊腫(odontogenic keratocyst) ② 含齒囊腫(dentigerous cyst) ③ 鼻腭管囊腫(nasopalatine duct cyst) (A)僅① (B)僅①② (C)僅②③ (D)①②③