(la). (3p) Please circle the item(s) which can be considered as pure substance(s) in Thermodynamics: (A). Pure liquid water (B). Mixture of liquid water and ice (C). Air (Mixture of

N2 and O2) at room temperature and atmosphere pressure (D). Mixture of water and large amount of soil (E). Mixture of water and minor amount of salt (C). Air (Mixture of N2 and O2) at room temperature and atmosphere pressure (D). Mixture of water and large amount of soil (E). Mixture of water and minor amount of salt