Switchgrassis used for ethanol production. The compositions of the switchgrass are 37% cellulose, 24% xylan, 3% galactan, 4% arabinan, 20% lignin, 7% extractives, and 5% ash(all on dry basis). The switchgrass is pretreated with dilute acid method before enzymatic hydrolysis and fermentation. The pretreatment hydrolyzes 10% hexosan (cellulose and galactan) and 90% pentosan (arabinan and xylan) into monomeric sugars. Approximately 30% of the hydrolyzed pentoses are decomposed to furfural. Assume there is no decomposition of the hydrolyzed hexoses. How much sugars (glucose, xylose, galactose, and arabinose, respectively) are produced when pretreating 1,000 kg (dry matter) switchgrass