单选题 Lochia normally progresses in which pattern?
A. Rubra, serosa, alba.
B. Serosa, rubra, alba.
C. Serosa, alba, rubra.
D. Rubra, alba, serosa.

【正确答案】 A

【答案解析】As the uterus involutes and the placental attachment area heals, lochia changes from bright red (rubra), to pinkish (serosa), to clear white (alba). The other options are incorrect.