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: Orthopaedics
Not a major criteria of Gurd 
Select and explain. 
A. Subconjunctival petechiae, B. Thrombocytopenia, C. PaO2 <60mmHg, D. Pulmonary edema
B: Thrombocytopenia
Answer: B: Thrombocytopenia 
Explanation: None