The reaction equation for the hydration of anhydrous copper(II) sulfate is given below. $\text{CuSO}_4 + 5\text{H}_2\text{O} \rightarrow \text{CuSO}_4\cdot5\text{H}_2\text{O}$ What colour change is seen in this reaction?
- Ablue to white
- Bwhite to blue
- Cpink to blue
- Dblue to pink