A $194\mathrm{g}$ sample of pure $\mathrm{ZnS}$ (Zn 65, S 32, O 16) is completely roasted: $2\mathrm{ZnS}+3\mathrm{O}{}_2\to 2\mathrm{ZnO}+2\mathrm{SO}{}_2$. Select the correct statements (STP molar volume $22.4L/mol$).

1. AThe volume of $\mathrm{SO}{}_2$ liberated at STP is $44.8\mathrm{L}$.
2. BThe mass of the solid decreases by $80\mathrm{g}$.
3. CThe volume of $\mathrm{O}{}_2$ consumed at STP is $67.2\mathrm{L}$.
4. DThe mass of $\mathrm{ZnO}$ obtained is $162\mathrm{g}$.