Which essential oil combination has been proven to be effective in reducing menstrual cramping when massaged into the pelvis?
a. Rose, Cinnamon, Lavender
b. Clary Sage, Cinnamon, Chamomile
c. Chamomile, Rose, Clay Sage
d. Lavender, Clary Sage, Rose
Answer: d. Lavender, Clary Sage, Rose