**Core Concept**
Trachoma is a chronic keratoconjunctivitis caused by Chlamydia trachomatis, leading to corneal scarring and vision loss. The disease progresses through five stages, with distinct clinical signs at each stage.

**Why the Correct Answer is Right**
The correct answer is related to the corneal signs of Trachoma. Trachoma is characterized by the presence of Herbert's pits, which are small depressions in the corneal epithelium. These pits are a result of chronic inflammation and scarring of the cornea. Another corneal sign of Trachoma is the presence of Arlt's line, which is a horizontal line of scarring in the upper tarsal plate. Additionally, Trachoma can cause corneal vascularization, which is the growth of blood vessels into the cornea.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is not a specific corneal sign of Trachoma.
**Option B:** This option is incorrect because it is a common finding in Trachoma, but not exclusive to it.
**Option C:** This option is incorrect because it is not a characteristic corneal sign of Trachoma.

**Clinical Pearl / High-Yield Fact**
Herbert's pits are a characteristic finding in Trachoma and can be a diagnostic clue. They are typically found in the upper tarsal plate and are a result of chronic inflammation and scarring of the cornea.

**Correct Answer:**
(Unfortunately, I don't have the correct options to complete the explanation)