This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Which of the following condition is an indication for Chrysotherapy? 
Select and explain. 
A. Rheumatoid ahritis, B. Ankylosing spondylitis, C. Behcet's syndrome, D. Osteoahritis
A: Rheumatoid ahritis
Answer: A: Rheumatoid ahritis 
Explanation: Chrysotherapy refers to the treatment of rheumatoid ahritis with gold based drugs. Toxicities associated with its use are skin rash, bone marrow supression and proteinuria. Drugs included under the conventional DMARD group of medications are methotrexate, sulfsalazine, gold, antimalarials, leflunomide, azathioprine, penicillamine and minocycline.