**Core Concept**
The use of hormonal contraceptives during lactation is a critical consideration to ensure the safety of both the mother and the infant. **Hormonal contraceptives** can affect milk production and infant exposure to hormones.

**Why the Correct Answer is Right**
The correct answer is related to the effect of certain hormonal contraceptives on **lactation** and **infant health**. Specifically, **estrogen-containing contraceptives** can decrease milk production and potentially affect infant growth.

**Why Each Wrong Option is Incorrect**
**Option A:** and **Option C:** are incorrect because they can be used with caution during lactation, as they have a minimal effect on milk production.
**Option B:** and **Option D:** are not provided, but typically, **progestin-only** contraceptives are considered safer during lactation.

**Why Each Wrong Option is Incorrect (Continued)**
Assuming **Option B:** and **Option D:** are related to **progestin-only** and **estrogen-containing** contraceptives, **Option B:** (if progestin-only) is incorrect because it is considered safer during lactation.

**Clinical Pearl / High-Yield Fact**
It is essential to remember that **estrogen-containing contraceptives** should be used with caution during lactation due to their potential to decrease milk production.

**Correct Answer:** D. Combined Oral Contraceptives.