Quarterly sales and net income data for General Electric for Year 1 through Year 9 are shown below ($ millions).

	Sales	Net Income		Sales	Net Income		Sales	Net Income
Dec. Y1	$17,349	$1,263	Sep. Y4	$14,442	$1,457	Jun. Y7	$21,860	$2,162
Mar. Y2	12,278	964	Dec. Y4	17,528	1,685	Sep. Y7	21,806	2,014
Jun. Y2	13,984	1,130	Mar. Y5	14,948	1,372	Dec. Y7	24,876	2,350
Sep. Y2	13,972	996	Jun. Y5	17,630	1,726	Mar. Y8	22,459	1,891
Dec. Y2	16,040	1,215	Sep. Y5	17,151	1,610	Jun. Y8	24,928	2,450
Mar. Y3	12,700	1,085	Dec. Y5	19,547	1,865	Sep. Y8	23,978	2,284
Jun. Y3	14,566	656	Mar. Y6	16,931	1,517	Dec. Y8	28,455	2,671
Sep. Y3	14,669	1,206	Jun. Y6	18,901	1,908	Mar. Y9	24,062	2,155
Dec. Y3	17,892	1,477	Sep. Y6	19,861	1,788	Jun. Y9	27,410	2,820
Mar. Y4	12,621	1,219	Dec. Y6	22,848	2,067
Jun. Y4	14,725	1,554	Mar. Y7	19,998	1,677

Required:

Use these data and any other historical information available to forecast sales and net income for each of the quarters ending September Year 9, December Year 9, March Year 10, and June Year 10. Explain the basis of your forecasts.