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
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 
Select and explain. 
A. ab, B. bc, C. bd, D. cd
D: cd
Answer: D: cd 
Explanation: None