The correct option is C Leprosy
Leprosy is a chronic disease caused by the Mycobacterium leprae. It is characterised by the disfiguring skin sore and nerve damage in limbs. It is a curable disease that can be treated by the multidrug therapy. It is a combination of drugs which include rifampicin, clofazimine and dapsone. Out of which rifampicin is the most effective antileprosy drug.