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
A patient of diabetes and hypeension comes to your clinic. As a doctor, you explain to him the risks of various complications. Which of these is the best tool to demonstrate the complications? 
Select and explain. 
A. Pie cha, B. Histogram, C. Scatter plot, D. Venn diagram
D: Venn diagram
Answer: D: Venn diagram 
Explanation: Ans: D. Venn diagram(Ref https://en.itikipedia.org/wiki/Venn_diagram)A Venn diagram is an easy tool to make people understand overlapping risk factors, complications and comorbidities to a patient in a simple language.