6. In the extraction of salicylic acid from water using dichloroethane, a student begins with 2.0 g of the salicylic acid dissolved in 100 ml of water.After extraction with 20 ml of dichloroethane, drying and evaporation of the organic layer afforded 1.0 g of salicylic acid. Assuming the student was efficient and did not lose any material, what is the partition coefficient (K) for the system ?A) 20 B) 5 C) 10 D) 2 E) 1