Strategies to Manage Persistent Pulmonary Hypertension of the Newborn Consist

Strategies to manage persistent pulmonary hypertension of the newborn Consist of which of the following
I.Oxygen therapy to maintain SPO₂ 90-120 mm Hg
II.Oxygen therapy to maintain SPO₂ 80-100 mm Hg
III.Pulmonary vasodilators
IV.HCT 35-45%
V.HCT 45-55%

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