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. Units Units Month Sold Index Month Sold Index Jan. 650 0.70 Jul. 760 0.90 Feb. 660 0.80 Aug. 780 1.10 Mar. 645 0.60 Sept. 810 1.20 Apr. 745 0.94 Oct. 810 1.20 May 750 0.89 Nov. 820 1.20 Jun. 843 1.00 Dec. 780 1.25 Click here for the Excel Data File b. Deseasonalize car sales. (Round your answers to the nearest whole number.) Month Deseasonalized Deseasonalized Month 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? O Increase inventory because the deasonalized data displays an upward trend Advertising and sales promotions because the deasonalized data displays a downward trend