During Examination,the Nurse Notices That a Woman's Left Breast Is

During examination,the nurse notices that a woman's left breast is slightly larger than her right breast.Which of the following is true?

A) Breasts should always be symmetrical.
B) This probably resulted from breastfeeding and is nothing to worry about.
C) This finding is not unusual,but the nurse should verify that this change is not new.
D) This finding is very unusual and means that the woman may have an inflammation or growth.