Marigold Bunyon Lumber Co. produces several products that can be sold at the split-off point or processed further and then sold. The following results are from a recent period:

Product	Sales Value at Split-off	Additional Variable Costs	Sales Value after Further Processing
Green lumber	$147600	$22600	$169800
Rough lumber	112000	25700	156800
Sawdust	92000	17500	117600

Which products should be processed further?

Green lumber and rough lumber

All three products

Green lumber and sawdust

Rough lumber and sawdust