**Core Concept**
Wilson's disease is a rare inherited disorder characterized by excessive accumulation of copper in the body, particularly in the liver, brain, and other vital organs. This occurs due to a defect in the ATP7B gene, which codes for a copper-transporting ATPase responsible for regulating copper levels in the body.

**Why the Correct Answer is Right**
The correct features of Wilson's disease include:
- Kayser-Fleischer rings, which are copper deposits in the cornea, visible upon slit-lamp examination.
- Liver dysfunction, ranging from mild liver enzyme elevations to severe liver failure.
- Neurological symptoms, such as tremors, ataxia, and psychiatric disturbances.
- Hemolytic anemia, characterized by the breakdown of red blood cells.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not a feature of Wilson's disease. Instead, it might be associated with another condition, such as hemochromatosis, where iron accumulation leads to tissue damage.
**Option B:** This option is also incorrect. While liver dysfunction is a feature of Wilson's disease, it is not the most distinctive or specific one. Liver disease can be present in many other conditions.
**Option C:** This option is incorrect. Neurological symptoms, including tremors and ataxia, are indeed features of Wilson's disease, but they are not the only ones.

**Clinical Pearl / High-Yield Fact**
Kayser-Fleischer rings are a hallmark of Wilson's disease and can be seen in over 90% of patients with this condition. They are a key diagnostic feature and can be detected even in the absence of other symptoms.

**Correct Answer: A.**