The following are multiple choice questions (with answers) about medical knowledge.   **Question:** All are true about aneuploidy except:   (A) 30% of trisomy 21 fetus die in utero   (B) 80% of trisomy 18 fetus die in uero   (C) Occurrence of aneuploidy has no relation with the progression of mother's age   (D) The recurrence risk for nondysjunctional aneuploidy is 1% higher
["(C) Occurrence of aneuploidy has no relation with the progression of mother's age <> answer", 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', "(A) 30% of trisomy 21 fetus die in utero \n (B) 80% of trisomy 18 fetus die in uero \n (C) Occurrence of aneuploidy has no relation with the progression of mother's age \n (D) The recurrence risk for nondysjunctional aneuploidy is 1% higher <> possible answers", '  All are true about aneuploidy except: <> context@']