Two drops of dilute sulphuric acid were added to 1 g of copper sulphate powder and then small amount of hot water added to dissolve it (step I) . On cooling , beautiful blue coloured crystals got separated (step II) . Step I and Step II are

Options

A. physical and chemical changes , respectively
B. chemical and physical changes , respectiveky
C. Both physical change
D. Both chemical change

Answer

B