**Core Concept**
Referred pain to the inferior angle of the right scapula in acute cholecystitis is a classic example of visceral pain referred to a dermatome. This phenomenon occurs due to the shared nerve roots of the gallbladder and the skin area overlying the scapula.

**Why the Correct Answer is Right**
The correct answer is related to the innervation of the gallbladder and the skin overlying the scapula. The gallbladder is innervated by the right phrenic nerve (C3-C5), which also supplies the skin area overlying the right scapula. In acute cholecystitis, inflammation of the gallbladder stimulates the C5 nerve root, leading to referred pain in the dermatome corresponding to C5, which is the skin area overlying the inferior angle of the right scapula.

**Why Each Wrong Option is Incorrect**
**Option A:** This is not a known or recognized term for referred pain in acute cholecystitis.
**Option B:** This is also not a recognized term for referred pain in acute cholecystitis.
**Option D:** This is a distractor and is not related to the correct answer.

**Clinical Pearl / High-Yield Fact**
Remember the "C5" dermatome, which corresponds to the skin area overlying the inferior angle of the right scapula, as the key to identifying referred pain in acute cholecystitis.

**Correct Answer:** D. Tietze's syndrome.