A 34 yr old woman comes to OPD complaining of abnormal uterine bleeding . Which of the following is the LEAST likely reason for abnormal bleeding in her age?

INFANCY PREPUBEAL ADOLESCENT REPRODUCTIVE PERIMENOPAUSAL POSTMENOPAUSAL maternal estrogen withdrawl vulvovaginitis anovulation exogenous hormone anovulation atrophy foreign body exogenous hormone use pregnancy fibroids endometrial polyp precocius pubey pregnancy anovulation cervical and endometrial polyp gynaecological cancer tumour coagulopathy fibroids thyroid dysfunction H cervical and endometrial polyp thyroid dysfunction Atrophy is the usually a reason for AUB in Post Menopausal woman