What type of lochia is bright to dark red and occurs on days 1–3 postpartum?
Correct Answer: A
Rationale: The correct answer is A: rubra. Lochia rubra is bright to dark red, typically occurring on days 1-3 postpartum. This is due to the presence of blood and decidual tissue. Serosa (B) is pinkish-brown and occurs around days 4-10, representing a mix of blood and mucus. Placental (C) is typically expelled within 30 minutes postpartum and consists of dark red blood. Alba (D) is whitish-yellow, appearing around day 10 and lasting up to 6 weeks, indicating the final stage of lochia consisting of leukocytes and decidual tissue.