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: Physiology
[{'content': 'Splenectomy is expected to cause \nSelect and explain. \nA. Increase in number of platelets, B. Decrease in number of platelets, C. No change in number of platelets, D. Complete absence of platelets', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Splenectomy causes an increase in the platelet count (thrombocytosis).', 'role': 'assistant'}]