A nurse is assisting with a prenatal examination of a client who is at weeks of gestation. The nurse notes that the client's vagina and vulva are a purplish color. The nurse should document this finding as which of the following?

A. Chloasma: Chloasma refers to hyperpigmented patches on the face, often called the "mask of pregnancy." It is a skin change due to hormonal fluctuations and does not involve the coloration of the vagina or vulva. B. Ballottement: Ballottement is a technique used during a prenatal exam to detect a floating fetus by tapping the cervix, resulting in a rebound sensation. It is not related to changes in vaginal or vulvar color. C. Chadwick's sign: Chadwick's sign is the bluish-purple discoloration of the cervix, vagina, and vulva that occurs around 6–8 weeks of gestation due to increased vascular congestion. This is the correct documentation for the observed purplish coloration. D. Hegar's sign: Hegar's sign is the softening of the lower uterine segment, which can be palpated during early pregnancy. It is a physical finding of the uterus, not a visual change of the vaginal or vulvar tissues.