It Is Sometimes Useful to "Jitter" Data When Viewing a Scatterplot

Multiple Choice

It is sometimes useful to "jitter" data when viewing a scatterplot involving dummy variables. To jitter data we

A) Add a small random number to both the independent and dependent variable before running the regression.
B) Add a small random number to both the independent and dependent variable to the plotted data.
C) Add a small random number to both the independent and dependent variable before running the regression and to the plotted data.
D) None of the above.