**Core Concept**
The treatment of Hodgkin's disease involves a combination of chemotherapy and radiation therapy. The goal is to induce a complete remission and prevent relapse.

**Why the Correct Answer is Right**
ABVD (Adriamycin, Bleomycin, Vinblastine, and Dacarbazine) is the current standard chemotherapy regimen for Hodgkin's lymphoma. This combination has been shown to be effective in inducing a complete remission in most patients, with a lower toxicity profile compared to older regimens like MOPP (Mechlorethamine, Oncovin (Vincristine), Procarbazine, and Prednisone). The ABVD regimen targets rapidly dividing lymphoma cells, while also sparing the bone marrow and other normal tissues.

**Why Each Wrong Option is Incorrect**
* **Option A:** CHOP (Cyclophosphamide, Hydroxydaunorubicin (Doxorubicin), Oncovin (Vincristine), and Prednisone) is a chemotherapy regimen used primarily for non-Hodgkin's lymphoma, not Hodgkin's disease.
* **Option B:** MOPP was one of the first effective chemotherapy regimens for Hodgkin's disease, but it has been largely replaced by ABVD due to its higher toxicity and lower efficacy.
* **Option D:** None is incorrect, as there is a correct answer among the options.

**Clinical Pearl / High-Yield Fact**
The ABVD regimen has been shown to be effective in inducing a complete remission in most patients with Hodgkin's lymphoma, with a lower toxicity profile compared to older regimens like MOPP. This makes it a crucial treatment option for patients with this disease.

**✓ Correct Answer: C. ABVD**