This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biostatistics, Subject name: Social & Preventive Medicine
Best cha to represent incidence of disease over a period of time 
Select and explain. 
A. Bar cha, B. Scatter plot, C. Line diagram, D. Histogram
C: Line diagram
Answer: C: Line diagram 
Explanation: Line diagram:- Trend of a event over a period of time and scatter plot relationship between two quantitative variables Ref:- K Park, 24th ed; pg num:- 883