**Core Concept**
Meig's syndrome is a rare clinical condition characterized by the presence of a benign ovarian tumor (usually a fibroma), ascites (fluid accumulation in the abdominal cavity), and pleural effusion (fluid accumulation in the pleural space around the lungs). This syndrome is often associated with a rapid resolution of symptoms after removal of the ovarian tumor.

**Why the Correct Answer is Right**
The correct answer is related to the pathophysiology of Meig's syndrome. The syndrome typically involves a benign ovarian tumor that secretes a substance causing fluid accumulation in the abdominal and pleural cavities. The exact mechanism of fluid accumulation is not fully understood, but it is thought to be related to the tumor's ability to produce a fluid-rich environment. The resolution of symptoms after tumor removal suggests that the tumor plays a key role in maintaining the fluid accumulation.

**Why Each Wrong Option is Incorrect**
* **Option A:**
* **Option B:**
* **Option C:**

**Clinical Pearl / High-Yield Fact**
It's essential to remember that Meig's syndrome is a rare condition, and the presence of a benign ovarian tumor, ascites, and pleural effusion should prompt further investigation to rule out other causes of fluid accumulation.

**Correct Answer: D.