**Core Concept**
Acute rheumatic fever (ARF) is a complication of untreated or inadequately treated group A beta-hemolytic streptococcal (GABHS) pharyngitis, characterized by inflammation of the joints, heart, skin, and brain. The clinical presentation of ARF is a result of an autoimmune response to the streptococcal infection, leading to the deposition of immune complexes and the activation of various inflammatory pathways.

**Why the Correct Answer is Right**
The correct answer is related to the fact that arthritis in ARF is typically migratory, meaning that it affects different joints in a sequential manner, often involving large joints such as the knees, elbows, and wrists. This migratory pattern is a hallmark of ARF and is due to the deposition of immune complexes and the activation of the complement system, leading to the release of various cytokines and chemokines that recruit inflammatory cells to the affected joints.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because arthritis in ARF is typically non-erosive, meaning that it does not cause permanent damage to the joints. Erosive arthritis is more characteristic of other conditions such as rheumatoid arthritis.

**Option B:** This option is incorrect because joint pain and swelling are common symptoms of ARF, but they are not the only features of the condition. The correct answer is related to the migratory nature of the arthritis.

**Option C:** This option is incorrect because fever is a common symptom of ARF, but it is not a feature of the arthritis itself. The correct answer is related to the migratory nature of the arthritis.

**Option D:** This option is incorrect because joint pain and swelling are common symptoms of ARF, but they are not the only features of the condition. The correct answer is related to the migratory nature of the arthritis.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the Jones criteria, which are used to diagnose ARF, include major and minor criteria. The major criteria include carditis, arthritis, chorea, and erythema marginatum, while the minor criteria include fever, arthralgia, and laboratory evidence of GABHS infection. A diagnosis of ARF requires the presence of at least two major criteria or one major and two minor criteria.

**Correct Answer: B.**