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: Social & Preventive Medicine
[{'content': 'Percentage of a data can be depicted on a: September 2009 \nSelect and explain. \nA. Pie cha, B. Bar diagram, C. Histogram, D. Graph', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A: Pie cha A pie cha/circle graph is a circular cha divided into sectors, illustrating propoion. In a pie cha, the arc length of each sector (and consequently its central angle and area), is propoional to the quantity it represents. It is named for its resemblance to a pie which has been sliced.', 'role': 'assistant'}]