This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Orthopaedics
[{'content': 'In which of the following conditions Dactylitis CANNOT be seen - \nSelect and explain. \nA. Sickle cell anaemia, B. Beta thalassemia, C. Congenital syphilis, D. Tuberculosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Dactylitis can occur in seronegative ahropathies, such as psoriatic ahritis and ankylosing spondylitis, and in sickle-cell disease as result of a vasoocclusive crisis with bone infarcts, and in infectious conditions including tuberculosis and leprosy. In reactive ahritis, sausage fingers occur due to synovitis. REF : MAHESWARI 9TH ED', 'role': 'assistant'}]