This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immune system, Subject name: Medicine
Immunoglobulins used in Rx of 
Select and explain. 
A. Myasthenia gravis, B. Malaria, C. PAN, D. Hemophilia
A: Myasthenia gravis
Answer: A: Myasthenia gravis 
Explanation: IMMUNOLOGICAL TREATMENT OF MYASTHENIA GRAVIS Ref - Davidsons 23e p1142