purchases and sales during the year follows:

$\backslash$table$[[,\backslash$table$[[$Unit$],[$Cost$]],\backslash$table$[[$Units$],[$Purchased$]],\backslash$table$[[$Units$],[$Sold$]]],[$Feb$\mathrm{.}2,,,400],[$Apr$\mathrm{.}6,$$$22,1,800,],[$July $10,,,1,600],[$Aug$\mathrm{.}9,25,800,],[$Oct$\mathrm{.}23,,,800],[$Dec$\mathrm{.}30,29,1,400,]]$

Required

a$.$ Assume that Chen uses the first$-$in$,$ first$-$out method. Compute the cost of goods sold for the year and the ending inventory balance at December $31$ for product A$.$

b$.$ Assume that Chen uses the last$-$in$,$ first$-$out method. Compute the cost of goods sold for the year and the ending inventory balance at December $31$ for product A$.$ Round to the nearest dollar.

$\backslash$table$[[$a$.,$First$-$In$,$ First$-$Out,,$],[,$Ending Inventory,$$,59,200$xhellp