**Core Concept**
Acute lymphadenitis is an inflammatory condition of the lymph nodes, typically caused by bacterial or viral infections. The treatment of choice aims to alleviate symptoms, prevent complications, and resolve the underlying infection.

**Why the Correct Answer is Right**
The treatment of acute lymphadenitis often involves a combination of antibiotics and supportive care. For bacterial infections, antibiotics such as penicillin or cephalosporins are commonly prescribed to target the causative organism. In cases of viral infections, antiviral medications may be used, but their effectiveness is often limited. In addition to pharmacological treatment, supportive care measures such as rest, hydration, and pain management are crucial in managing symptoms and promoting recovery.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not provide a specific treatment approach for acute lymphadenitis.
**Option B:** This option is incorrect as it may not be effective against viral infections, which are a common cause of acute lymphadenitis.
**Option C:** This option is incorrect as it may not be the best choice for bacterial infections, which are another common cause of acute lymphadenitis.

**Clinical Pearl / High-Yield Fact**
It is essential to identify the underlying cause of acute lymphadenitis, as this will guide the choice of treatment. A thorough history, physical examination, and diagnostic testing (such as blood cultures or imaging studies) can help determine the etiology of the condition.

**Correct Answer: A. Antibiotics and supportive care.**