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
[{'content': 'A patient with previously normal heamoglobin suffered a sudden massive acute hemorrhage. He is most likely to show all of the following except -a) High reticulocyte countb) High neutrophil countc) High packed cell volumed) Low mean corpuscular volume \nSelect and explain. \nA. ab, B. bc, C. bd, D. cd', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]