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
All are true regarding paroxysmal nocturnal haemoglobinuria, except: 
Select and explain. 
A. Haemosiderinuria, B. Pancytopenia, C. Increased alkaline phosphatase, D. Cellular marrow
C: Increased alkaline phosphatase
Answer: C: Increased alkaline phosphatase 
Explanation: Answer is C (Increased alkaline phosphatase) PNH is associated with a decreased leukocyte alkaline phosphate scape. Remember the following fact to answer several questions in our kind of examinations by the principle of exclusion: Conditions with decreased LAP scores P.N.H. C.M.L. Conditions with increased LAP scores Polycythemia (-) Leukemoid reaction c.) Infection