Sonographic Findings in Cystic Adenomatoid Malformation Include All of the Following

Sonographic findings in cystic adenomatoid malformation include all of the following except:

A) cystic adenomatoid malformation may occur below the diaphragm.
B) cystic adenomatoid malformation may be an echogenic mass in type II cystic adenomatoid malformation.
C) cystic adenomatoid malformation may be a large cyst in type I cystic adenomatoid malformation.
D) cystic adenomatoid malformation is associated with polyhydramnios.