A nurse is assessing a client who is at 38 weeks of gestation. Upon admission 2 hr ago the client had irregular contractions, was dilated 2 cm, and was at -1 cm station. Which of the following findings indicates progression in labor?

A. Urinary frequency is common in pregnancy but does not indicate labor progression. B. Increased blood-tinged vaginal mucus (bloody show) indicates cervical dilation and labor progression. C. Station is measured in centimeters but ranges from -3 to +3 relative to the ischial spines, so "3 cm" station is unclear and likely incorrect terminology. D. Contractions easing with walking suggest false labor rather than progression.