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