First-trimester findings in Patau syndrome (13) involve:
a) Cystic hygroma, rocker-bottom feet, clenched hands
b) Strawberry-shaped skull, micrognathia, low-set ears
c) Increased nuchal translucency, absent nasal bone, and hypoplastic nasal bone
d) Choroid plexus cysts, hypoplastic middle phalanx of the fifth digit, clinodactyly