This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Rheumatoid Ahritis, Subject name: Medicine
Which of the following condition improves with pregnancy? 
Select and explain. 
A. Multiple sclerosis, B. SLE, C. Myasthenia gravis, D. Rheumatoid ahritis
D: Rheumatoid ahritis
Answer: D: Rheumatoid ahritis 
Explanation: Over 75% of rheumatoid ahritis patients repo improvement of symptoms in pregnancy. Generally, the autoimmune disease worsens/ same severity during pregnancy.