What is PALM in PALM-COEIN AUB classification?

A) PALM is special circumstances - Polyp Adenomyosis Leiomyoma Malignancy
B) PALM is structural abnormality - Polyp Adenomyosis Leiomyoma Malignancy
C) PALM is structural abnormality - Polyp Acanthosis Leiomyoma Malignancy
D) PALM is structural abnormality - Petichiae Adenocarcinoma Leiomyoma Miscellaneous