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: Pathology
[{'content': 'A newborn baby presented with profuse bleeding from the umbilical stump after bih. Rest of the examination and PT, APTT are within normal limits. Most of probable diagnosis is: \nSelect and explain. \nA. Factor X deficiency, B. Glanzmann thrombasthenia, C. von-Willebrand disease, D. Bernard-Soulier disease', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. Factor X deficiency', 'role': 'assistant'}]