Isabelle Is Not Sure If the Sensation She Is Having

Isabelle is not sure if the sensation she is having is Braxton-Hicks contractions or actual labor contractions. Her obstetrician tells her that labor contractions are painful, regular, and

A) a sign that the fetus will be born within 6 hours.
B) a sign that a Cesarean-section will be necessary.
C) will become less intense as the labor process continues.
D) can be intensified by walking.