The variables xdomain, xrange, ydomain, yrange, cdomain and crange have been initialized with the same array [0,1]. Modify these arrays so that the d3.scaleLinear objects xs, ys and cs correctly map data values and indices to the desired display values. The scale xs() should map data values so the bars extend from zero to as much as 100 pixels. The scale ys() should map the top edge of the bars from 100 to 250.The scale xs() should set the colors of the bars based on the data value, extending from "blue" for a data value of zero, to "orange" for the maximum data value.