New car sales for a dealer in Cook County, Illinois, for the past year are shown in the following table, along with monthly indexes (seasonal relatives), which are supplied to the dealer by the regional distributor. Month Units Sold Index Month Units Sold Index Jan. 649 0.70 Jul. 771 0.90 Feb. 642 0.80 Aug. 801 1.10 Mar. 625 0.60 Sept. 833 1.20 Apr. 729 0.94 Oct. 834 1.20 May 738 0.89 Nov. 849 1.20 Jun. 823 1.00 Dec. 781 1.25 b. Deseasonalize car sales. (Round your answers to the nearest whole number.) Month Deseasonalized Month Deseasonalized Jan. Jul. Feb. Aug. Mar. Sep. Apr. Oct. May Nov. Jun. Dec. e. What action might management consider based on your findings in part b? Advertising and sales promotions because the deasonalized data displays a downward trend Increase inventory because the deasonalized data displays an upward trend.