One Way of Exaggerating the Apparent Message Conveyed by a Bar

One way of exaggerating the apparent message conveyed by a bar graph is by:

A) Altering the vertical scale while leaving the horizontal scale as is.
B) Altering both the horizontal scale and the vertical scale by the same amount.
C) Altering the horizontal scale while leaving the vertical scale as is.
D) Narrowing the width of the bars.
E) Printing the bars in different colors.