There are several ways to make a bar graph deceptive. Which of these is sometimes used to exaggerate differences from one data value to the next?

There are several ways to make a bar graph deceptive. Which of these is sometimes used to exaggerate differences from one data value to the next? 

      A. Making the graph taller than it needs to be

  B. A gap in the vertical axis

  C. Starting the vertical axis at a point greater than zero

  D. Making the graph shorter than it needs to be