A patient was admitted at 39 weeks of gestation in active labor and connected to a fetal monitor. Two hours after admission, she had an assisted spontaneous delivery of a live female infant weighing 3000 grams. What is the correct code assignment for the diagnoses?

A. O82, Z37.0
B. O80, Z37.9
C. O80, Z3A.39
D. O80, Z37.0, Z3A.39