Which of the following statements best explains how the graphs misrepresent the data?

a. the graphs were created with different colors.

b. the graph for city b makes its population appear much smaller, but its population is only a little smaller than city a.

c. the graphs use different scales, making it appear that city a has a larger population than city b.

d. the graphs do not include information for the years between 1950 and 2000, so there is not enough information to compare their populations.