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': 'G-CSF and GMCSF in haematopoisis causes : \nSelect and explain. \nA. Leucocytosis, B. Erythrocytosis, C. Leucopenia, D. Thrombocytosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Leucocytosis', 'role': 'assistant'}]