A Doula Is Supporting a Mother Who Is Complaining of Excruciating

A doula is supporting a mother who is complaining of excruciating pain in the lower back with each contraction as well as in between contractions. What is the best way to describe the double hip squeeze as a means for alleviating back pain?

A) The partner or doula presses his or her palm against mom's sacrum using the other palm for support on the opposing side of the body.
B) The partner or doula watches for where mom seems to be tensing her muscles, then touches or strokes her in that location until she relaxes the muscle.
C) The partner or doula places both hands on the flat planes of the pelvis while mom is on her hands and knees, then presses in and up, holding the pressure for the entire contraction.
D) The laboring mom kneels on her hands and knees, then pulls her pelvis in while tightening her abdomen and arching her back, then relaxes.