Roberta Works for a Company That Manufactures Furniture

Roberta works for a company that manufactures furniture. Over the last year, a couple of the company's plants have ramped up production, while others have slowed production. Roberta wants to compare the increase or reduction in production as a percentage of last year's production numbers for each plant. Which type of chart would be fit her purpose?

A) a simple bar or column chart
B) an organizational chart
C) a bilateral column chart
D) a clustered bar chart
E) a flowchart