The availability of Material $A$ is limited to $8,000kgs.$

$\backslash$table$[[$Product$,$P$,$Q$,$R$],[$Demand $($units$),2,000,2,500,4,000],[$Variable cost $-$making per unit $(),10,12,14],[$Purchase price per unit $(),13,17,16],[$Kgs per unit of Material A$,3,2,1]]$

Determine which product the company should make or buy?