The following line chart would be more appropriate than the bar chart if __________. The Line Chart displays values for x, in blue, and y, in orange. Data is shown by solid lines moving from one point to the other to indicate the value. The bar chart shows each period with the value of x and y side-by-side. a. the variables are completely independent b. the x-variable data are older than the y-variable data c. the minimums and maximums are important to display d. the data collected have an important time series component denoted by the x-axis