The following chart is an example of a _____. This chart shows the x axis as months from January through December. The y axis is labeled as Number of Employees, increments shown in increases of 10 beginning with -30 and ending at 60. The bars that represent the data are shown in vertical rectangles. The rectangles are colored to show Gains in dark blue and Losses in light blue, the transition happening at the 0-employee mark. a. funnel chart b. stacked column chart c. scatter plot d. control chart