**Core Concept**
The National Leprosy Eradication Programme (NLEP) in India employs a multidrug therapy (MDT) regimen for treating multibacillary leprosy, which involves administering a combination of antibiotics to effectively eliminate the causative bacteria, *Mycobacterium leprae*.

**Why the Correct Answer is Right**
The standard MDT regimen for multibacillary leprosy includes Rifampicin, Clofazimine, and Dapsone. Rifampicin acts by inhibiting bacterial RNA synthesis, thereby preventing the replication of *M. leprae*. Clofazimine exhibits both bacteriostatic and bactericidal activity against *M. leprae*, while Dapsone inhibits the synthesis of dihydrofolic acid, essential for bacterial growth. The combination of these three antibiotics ensures a synergistic effect in eliminating the bacteria and preventing the development of resistance.

**Why Each Wrong Option is Incorrect**
* **Option A:** This is incorrect because it does not include Dapsone, which is a crucial component of the MDT regimen for multibacillary leprosy.
* **Option B:** This is incorrect because it replaces Rifampicin with another antibiotic, which is not a standard component of the MDT regimen for multibacillary leprosy.
* **Option D:** This is incorrect because it includes a combination of antibiotics that is not recommended for the treatment of multibacillary leprosy.

**Clinical Pearl / High-Yield Fact**
It is essential to note that the MDT regimen for multibacillary leprosy should be administered for 12 months to ensure complete elimination of the causative bacteria and prevent the development of resistance.

**Correct Answer:** C. Rifampicin, Clofazimine, and Dapsone.