## Core Concept
Wilm's tumor, also known as nephroblastoma, is a type of kidney cancer that primarily affects children. It originates from the immature cells of the kidney, specifically from the metanephric blastema. The peak incidence of Wilm's tumor is around 2-3 years of age.

## Why the Correct Answer is Right
The correct answer relates to the characteristic features of Wilm's tumor. One of the hallmark genetic abnormalities associated with Wilm's tumor is the mutation in the **WT1 gene**, which is a tumor suppressor gene located on chromosome 11p13. This mutation can lead to the development of Wilm's tumor, and it is often associated with other congenital anomalies.

## Why Each Wrong Option is Incorrect
- **Option A:** This option is incorrect because it does not accurately describe a characteristic feature of Wilm's tumor. Without the specific details of option A, we can infer that any option not directly related to known characteristics of Wilm's tumor, such as genetic mutations, clinical presentation, or treatment, would be incorrect.
- **Option B:** Similarly, this option is incorrect as it does not align with established facts about Wilm's tumor.
- **Option C:** This option might discuss a feature not typically associated with Wilm's tumor or might be incomplete.

## Clinical Pearl / High-Yield Fact
A key clinical pearl for Wilm's tumor is that it is often associated with **WAGR syndrome**, which stands for Wilm's tumor, Aniridia, Genitourinary anomalies, and mental Retardation. This syndrome is linked to deletions on chromosome 11p13, highlighting the genetic basis of the disease.

## Correct Answer Line
**Correct Answer: D.**