The correct answer is option ($1$) as Myasthenia gravis, Rheumatoid arthritis and Systemic Lupus Erythematosus ($SLE$) are autoimmune disorders.

Muscular dystrophy is a genetic disorder which progressively affects the skeletal muscles. Gout is the inflammation of joints due to deposition of uric acid crystals.

Option ($2$), ($3$) and ($4$) are not the correct answer because all of them are not autoimmune disorders.