A 100-ML Sample of Water Is Placed in a Coffee $\Delta$

A 100-mL sample of water is placed in a coffee cup calorimeter.When 1.0 g of an ionic solid is added,the temperature decreases from 21.5°C to 20.8°C as the solid dissolves.For the dissolving of the solid

A) ( $\Delta$ H < 0)
B) ( $\Delta$ S_univ > 0)
C) ( $\Delta$ S_sys< 0)
D) ( $\Delta$ S_surr > 0)
E) none of these