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 about heparin induced thrombocytopenia (HIT), EXCEPT: 
Select and explain. 
A. Thrombocytopenia is not severe usually, B. Associated with bleeding especially from GI tract, C. Marked increase in thrombosis, D. HIT can occur after exposure to low molecular weight heparin
B: Associated with bleeding especially from GI tract
Answer: B: Associated with bleeding especially from GI tract 
Explanation: Drug induced thrombocytopenia due to heparin has some special features. It will not lead to bleeding. Marked thrombocytopenia < 20,000 is rare. Thrombosis is a major complication. Ref: Harrisons principles of internal medicine, Edition -18, Page - 967