**Core Concept**
Sarcoidosis is a systemic granulomatous disease characterized by the formation of non-caseating granulomas in various organs, most commonly the lungs and lymph nodes. The underlying pathophysiology involves an abnormal immune response, with **T-cell** activation and **cytokine** release playing key roles.

**Why the Correct Answer is Right**
Since the correct answer is not provided, let's discuss a key aspect of sarcoidosis: the disease often presents with **bilaterally symmetrical hilar lymphadenopathy** on chest X-ray, and **non-caseating granulomas** are found on biopsy. The exact mechanism is unknown, but it's thought to involve an exaggerated **cell-mediated immune response**.

**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific answer choices, we can't directly address each option. However, common incorrect statements about sarcoidosis might include those related to its pathophysiology or clinical presentation.
**Option B:** Similarly, without the answer choices, we can't provide specific corrections.
**Option C:**
**Option D:**

**Clinical Pearl / High-Yield Fact**
A key point to remember about sarcoidosis is its potential to affect any organ system, although pulmonary involvement is most common.

**Correct Answer:** Not provided in the query.