Magnesium chloride, $\text{MgCl}_2$, and silicon tetrachloride, $\text{SiCl}_4$, are each placed into water separately. What approximate pH values do the resulting solutions have?
- A$\text{MgCl}_2$: 0-3, $\text{SiCl}_4$: 0-3
- B$\text{MgCl}_2$: 0-3, $\text{SiCl}_4$: 6-7
- C$\text{MgCl}_2$: 6-7, $\text{SiCl}_4$: 0-3
- D$\text{MgCl}_2$: 6-7, $\text{SiCl}_4$: 6-7