Should the due date be changed? (LMP vs ultrasound, ACOG)

CORRECTED 2026-10-11: the table footnote says the gestational-age range is "*Based on LMP", so the row is now chosen by the LMP-based age (it was chosen by the ultrasound age). The CO 700 prose describes the same cut-offs in terms of when the ultrasound was performed; the two coincide except near a boundary, where the table footnote is followed.