During Physical Examination,the Nurse Notes That a Female Patient Has

During physical examination,the nurse notes that a female patient has an inverted left nipple.Which of the following statements about inverted nipples is most accurate?

A) Normal nipple inversion is usually bilateral.
B) Unilateral nipple inversion is always a serious sign.
C) It should be determined whether the inversion is a recent change.
D) Nipple inversion is not significant unless accompanied by an underlying palpable mass.