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: Microbiology
False about shwachman's disease 
Select and explain. 
A. Leucocytosis, B. Exocrine pancreatic insufficiency, C. Short stature, D. Bone marrow dysfunction
A: Leucocytosis
Answer: A: Leucocytosis 
Explanation: Shwachman's disease is a disorder of phagocytosis
Characterised by neutropenia not leucocytosis.