Which Statement Best Describes a Difficulty with Diagnosing Premenstrual Dysphoric

Which statement best describes a difficulty with diagnosing premenstrual dysphoric disorder (PMDD) ?

A) DiGuilio and Reissing (2006) found little evidence that PMDD is a distinct diagnostic entity.
B) Symptoms occur only during the late luteal phase and thus it does not qualify as a genuine endocrine disorder.
C) It is difficult to distinguish PMDD from premenstrual exacerbations of other disorders, such as binge eating disorder or mood disorders.
D) It has less severe symptomatology than premenstrual syndrome and thus does not warrant a DSM-IV diagnostic label.