Myasthenia gravis a common auto-immune disease, is characterized by the production of antibodies against self protien called as

Myasthenia gravis is an autoimmune disorder where antibodies attack acetylcholine receptors at the neuromuscular junction, causing muscle weakness. The antibody targets acetylcholine receptors (the question says 'acetylcholine' as the self protein target, which is imprecise but clearly intends this meaning). Options A, B, and D are unrelated hormones or substances not involved in this condition.