Q belongs to Group 2 metals. An excess of $\text{QCO}_3(\text{s})$ is added to $\text{H}_2\text{SO}_4(\text{aq})$, and the resulting mixture is filtered. A sample of $\text{QSO}_4$ is then collected by evaporating the filtrate. Which element could Q be?
- Abarium, calcium or magnesium
- Bbarium or calcium only
- Ccalcium only
- Dcalcium or magnesium only