This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Rheumatoid Arthritis, Subject name: Medicine
Pleural effusion in rheumatoid arthritis is typically associated with the following features except- 
Select and explain. 
A. Glucose > 60 mg/dl, B. Protein > 3 gm/dl, C. Pleural fluid protien to serum protein ratio of >0-5, D. Pleural fluid LDH to serum LDH ratio of >0-6
A: Glucose > 60 mg/dl
Answer: A: Glucose > 60 mg/dl 
Explanation: Ans. is 'a' i.e., Glucose > 620 mg/dl o When glucose in pleural fluid is less than 60mg/dl it is low glucose pleural fluid.Causes of Low glucose pleural fluido Malignancyo Rheumatoid arthritis o Empyemao Hemothoraxo Paragonimiasiso Churg strauss syndromeo Lupus pleuritis (occasionally)