This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Medicine
Cause of transudate pleural effusionn is 
Select and explain. 
A. Nephrotic syndrome, B. Tuberculosis, C. Pneumonia, D. Pulmonary infarction
A: Nephrotic syndrome
Answer: A: Nephrotic syndrome 
Explanation: Causes of transudative effusion includes Nephrotic syndrome,congestive hea failure,cirrhosis,pulmonary embolization, myxedema,etc.Causes of exudative effusion includes neoplasms;infections like pneumonia,TB,collagen vascular diseases,Meigs syndrome,etc. Most common cause of exudative pleural effusion is bacterial pneumonia. Reference:Davidson's Medicine-22nd edition,page no:661.