A 17-year-old, first-time pregnant female at 27 completed weeks of gestation is admitted to the hospital after her first prenatal visit. She states she did not know she was pregnant and had not noted any weight gain. She is a runaway and has been living in homeless shelters and on the street for the past year. She is diagnosed with malnutrition and low weight gain in her pregnancy. The social services staff is contacting the city's child protective services agency for placement after treatment for her malnutrition. What is the appropriate coding and sequencing for the diagnoses in this case?

A. O25.12, Z3A.27
B. O25.12, O26.12, Z3A.27
C. O25.12, O26.12, O09.32
D. O25.12, O26.12, O09.32, O09.72, Z3A.27