question: Q:A 32-year-old woman, gravida 2, para 1, at 14-weeks' gestation comes to the physician for a prenatal visit. Routine first trimester screening shows increased nuchal translucency, decreased β-hCG concentration, and decreased levels of pregnancy-associated plasma protein A. Amniocentesis shows trisomy of chromosome 13. This fetus is at increased risk for which of the following?? 
  {'A': 'Optic glioma', 'B': 'Cutis aplasia', 'C': 'Duodenal atresia', 'D': 'Cystic hygroma', 'E': 'Prominent occiput'},