According to a Study by Romans Et Al

According to a study by Romans et al.on premenstrual syndrome (PMS) based on data collected from a random sample of Canadian women daily for 6 months,_____.

A) there is strong evidence that PMS occurs during the last week of the luteal phase of the menstrual cycle.
B) the great majority of women experience menstrual cycle fluctuations in mood,but a small percentage may not.
C) the average ratings of depressive symptoms reported by women experiencing PMS is clinically significant and warrants intervention.
D) there is no scientific evidence of PMS,although there are plenty of stereotypes about it.