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
Left-sided pleural effusion seen in -a) Pancreatitisb) Rheumatoid arthritisc) Hypoproteinemiad) CCFe) Esophageal rupture 
Select and explain. 
A. a, B. ae, C. ab, D. ad
B: ae
Answer: B: ae 
Explanation: None