This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax, Subject name: Anatomy
[{'content': 'Lingula is which part of lung? \nSelect and explain. \nA. Left lower lobe, B. Left upper lobe, C. Right lower lobe, D. Right upper lobe', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B Left upper lobeRef: Kulkarni Clinical Anatomy, 2nd ed. pg. 943* Left upper lobe is divided into apical lobe and lingular lobe.* The Lingula is a part of the Left upper lobe of lung* It forms left cardiac border.', 'role': 'assistant'}]