**Core Concept**
Arthritis mutilans is a severe and rare form of arthritis characterized by the destruction of joints, leading to deformities and disability. It is associated with **psoriatic arthritis**, a type of autoimmune disorder. The underlying principle involves an abnormal immune response, leading to joint inflammation and damage.

**Why the Correct Answer is Right**
The correct answer is associated with psoriatic arthritis, which is known to cause arthritis mutilans due to the intense inflammatory response and subsequent joint destruction. This condition involves the **pro-inflammatory cytokines** and **immune cells** that attack the joints, leading to the characteristic deformities.

**Why Each Wrong Option is Incorrect**
**Option A:** Is incorrect because it is not typically associated with arthritis mutilans.
**Option B:** Does not usually cause the severe joint destruction seen in arthritis mutilans.
**Option C:** Is not the primary condition linked to arthritis mutilans.

**Why Each Wrong Option is Incorrect (Continued)**
**Option D:** While related to autoimmune disorders, it is not the specific condition characterized by arthritis mutilans.

**Clinical Pearl / High-Yield Fact**
Arthritis mutilans is a severe complication of psoriatic arthritis, emphasizing the importance of early diagnosis and treatment to prevent joint destruction.

**Correct Answer:** D. Psoriatic arthritis.