A Pregnant Woman Is in Her Third Trimester

A pregnant woman is in her third trimester.She asks the nurse to explain how she can tell true labor from false labor.The nurse would explain that "true" labor contractions:

A) Increase with activity such as ambulation.
B) Decrease with activity.
C) Are always accompanied by the rupture of the bag of waters.
D) Alternate between a regular and an irregular pattern.