bar graph

The graph above shows the cost of a large cheese pizza at three different restaurants. What is the best way for this graph to be adapted to more accurately show the information?
A. The vertical axis should use intervals of $0.50 instead of $1.00.
B. The graph should be redrawn with the vertical axis beginning with $0.
C. The bars should be much narrower.
D. There should be no space between the bars.

A. The vertical axis should use intervals of $0.50 instead of $1.00.