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
Which one of the following is false about PNH 
Select and explain. 
A. Thrombosis is the leading cause of death, B. Bone marrow is hyperplastic, C. Gold standard  test - sucrose lysis test, D. Hemolysis precipitated during exercise
C: Gold standard  test - sucrose lysis test
Answer: C: Gold standard  test - sucrose lysis test 
Explanation: Gold standard  - Flow cytometry.