**Core Concept**
Lochia is the vaginal discharge that occurs after childbirth, composed of blood, bacteria, and tissue debris. This discharge is a normal part of the postpartum healing process, and its characteristics change over time.

**Why the Correct Answer is Right**
The order of lochia is as follows: Lochia rubra (first 3-4 days), Lochia serea (next 7-10 days), and finally Lochia alba (after 10-14 days). Lochia rubra is characterized by its bright red color and high blood content, while Lochia serea is more serous and pinkish. Lochia alba is a whitish or yellowish discharge, indicating that the uterus has returned to its pre-pregnant size.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify the correct order or characteristics of lochia.
**Option B:** This option is incorrect because it is incomplete and does not provide a clear description of the lochia stages.
**Option C:** This option is incorrect because it does not accurately describe the progression of lochia.

**Clinical Pearl / High-Yield Fact**
It is essential to note that the presence of excessive bleeding or foul-smelling discharge during the postpartum period may indicate a complication, such as infection or retained placental tissue.

**Correct Answer: D. Lochia rubra, Lochia serea, Lochia alba.**