This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Medicine
[{'content': 'Which is NOT a feature of pleural effusion? \nSelect and explain. \nA. Horizontal fluid level, B. Low lung volume, C. Muffled hea sound, D. Decreased chest movements', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Features of Pleural Effusion - 1. Blunting of costophrenic angle 2. Low lung volumes 3. | chest movement 4. Dullness on percussion 5. Ellis curve Muffled Hea sound is characteristic feature of - Pericardial effusion | Can associated with pleural effusion Horizontal fluid level is characterised feature of Hydropneumothorax', 'role': 'assistant'}]