问题
单项选择题
Lochia normally progresses in which pattern（）
A. Rubra, serosa, alba.
B. Serosa, rubra, alba.
C. Serosa, alba, rubra.
D. Rubra, alba, serosa.
答案
参考答案：A
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.