**Core Concept**
The question is testing the student's knowledge of the clinical presentation of Cat-Scratch Disease (CSD), a zoonotic infection caused by the bacterium Bartonella henselae. CSD typically presents with a combination of symptoms including painful lymphadenopathy, fever, and characteristic skin lesions.

**Why the Correct Answer is Right**
The correct answer is associated with the clinical presentation of Cat-Scratch Disease, which is characterized by the development of painful lymphadenopathy, particularly in the inguinal region, following a cat scratch or bite. This is due to the bacterium Bartonella henselae, which is transmitted to humans through the saliva of infected cats. The lymphadenopathy in CSD is often accompanied by systemic symptoms such as fever, headache, and fatigue.

*Option A:* This option is incorrect as it is not associated with the clinical presentation of Cat-Scratch Disease. It may be a distractor for diseases that cause lymphadenopathy, such as tuberculosis or lymphoma.
*Option B:* This option is incorrect as it is not a common presentation of Cat-Scratch Disease. While some patients may experience systemic symptoms, the characteristic feature of CSD is the development of painful lymphadenopathy.

**Clinical Pearl / High-Yield Fact**
A key clinical feature of Cat-Scratch Disease is the presence of painful lymphadenopathy, particularly in the inguinal region, following a cat scratch or bite. This clinical presentation should prompt the clinician to investigate for Bartonella henselae infection.

**Correct Answer:** A. Cat-Scratch Disease.