**Core Concept**
Testicular tumors are a type of germ cell or non-germ cell malignancy that develop in the testicles. The most common types of testicular tumors are seminomas and non-seminomas, which are often associated with specific genetic alterations and molecular pathways.

**Why the Correct Answer is Right**
The correct answer involves understanding the histological classification of testicular tumors. Testicular tumors are categorized into germ cell tumors (GCTs) and non-germ cell tumors (NGCTs). GCTs are further divided into seminomas and non-seminomas, with seminomas being more sensitive to radiation therapy and chemotherapy.

**Why Each Wrong Option is Incorrect**
**Option A:** This option may refer to the fact that testicular tumors are more common in younger men, but it doesn't directly address the classification or treatment of testicular tumors.
**Option B:** This option might suggest that testicular tumors are caused by hormonal imbalances, which is not a primary factor in their development.
**Option C:** This option may imply that testicular tumors are primarily treated with surgery alone, which is an oversimplification of the treatment approach.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that seminomas are highly sensitive to radiation therapy and chemotherapy, whereas non-seminomas are more resistant to these treatments and often require more aggressive surgical approaches.

**Correct Answer:** C.