35. 29歲女性妊娠 32週,主訴僵直性下腹疼痛,自外院轉診至醫學中心緊急剖腹產,手術中情況如圖所示,該病人最可能的診斷為何?(A)placental abruption(B)placenta previa with bleeding(C)vasa previa(D)uterine inversion