If Gun Control Legislation Was Passed to Reduce the Number

If gun control legislation was passed to reduce the number of homicides,which of the following graphs would be most likely to convince you that the legislation was producing the intended effect? Note that in all graphs the horizontal axis (x axis) is time and the vertical axis (y axis) is number of homicides.The dot- indicates an observation.

A)
B)
C)
D)
E) All of these choices show that gun control legislation reduces homicides.