Which of the Following Mechanisms Is (Are)responsible for the Possible

Which of the following mechanisms is (are) responsible for the possible association between oligohydramnios and lung hypoplasia?
I.Abnormal carbohydrate metabolism
II.Mechanical restriction of the chest wall
III.Interference with fetal breathing
IV.Failure to produce fetal lung liquid

A) I and III only
B) II and III only
C) I,II,and IV only
D) II,III,and IV only