**Core Concept**
The application of outlet forceps is a critical step in the delivery of a baby. It requires careful consideration of several criteria to ensure a safe and successful outcome. The criteria for outlet forceps application include the station of the fetal head, the position of the fetal head, the diameter of the fetal head, and the presence of a caput succedaneum.

**Why the Correct Answer is Right**
Outlet forceps application is contraindicated in the presence of a caput succedaneum, which is a swelling of the scalp due to increased intracranial pressure. This condition may indicate that the fetal head is not in the correct position for forceps delivery, and may also increase the risk of complications such as intracranial hemorrhage. The correct criteria for outlet forceps application include a fetal head station of -2 or lower, a diameter of the fetal head that is less than 10 cm, and an occiput anterior position.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because a caput succedaneum is actually a contraindication for outlet forceps application.
* **Option B:** This option is incorrect because a fetal head station of +2 or higher is not a criterion for outlet forceps application, but rather may indicate that the forceps are not needed.
* **Option C:** This option is incorrect because a diameter of the fetal head greater than 10 cm is not a criterion for outlet forceps application, but rather may indicate that the forceps are not suitable for the size of the fetal head.

**Clinical Pearl / High-Yield Fact**
A key point to remember when considering outlet forceps application is to carefully assess the station and position of the fetal head, as well as the presence of any caput succedaneum. This will help to ensure that the delivery is safe and successful for both the mother and the baby.

**Correct Answer: A. Caput succedaneum.**