22依發生阻生齒機率由高而低排列,下列順序何者正確? ①maxillary canine ②mandibular premolar ③maxillary premolar ④second molars ⑤maxillary and mandibular 3rd molars (A) ⑤②③①④ (B) ⑤①③②④ (C) ⑤①②③④ (D) ⑤④①②③