Sony reported the followng current$-$year purchases and sales data for its only product.

$\backslash$table$[[\backslash$table$[[$Date$],[$Jan$-01]],$Activities,,Uniits Sold at Retail$],[,],[$Beginnng Inventory,$$1,000,,],[$Jan$-10,$Sales,,$90$ units @$$40],[$Mar$-14,$Purchase,$$3,750,,],[$Mar$-15,$Sales,,$140$ units @ $$40],[$Jul$-30,$Purchase,$$8,000,,],[$Oct$-05,$Sales,,$300$ units @ $$40],[$Oct$-26,$Purchase,$$15,000,,],[$Totals$,$$$27,750,530$ units,$],[,,,,],[$TASK$],[1.$ Determine the costs assigned to ending inventory and to cost of goods sold using;$],[$a$)$ FIFO$],[$b$)$ LIFO,,,,$]]$