Which of the following gases occupies 22.4 L volume at STP?

32g of oxygen, ${\mathrm{O}}_2=1 \mathrm{mol} {\mathrm{O}}_2=22.4\mathrm{L}$ of volume at STP

1 mol of ${\mathrm{CH}}_4=22.4 \mathrm{L}$of volume at STP

22 g of ${\mathrm{CO}}_2=0.5 \mathrm{mol} {\mathrm{CO}}_2=11.2\mathrm{L}$of volume at STP

$6.023\times {10}^{23}$ molecules of ${\mathrm{H}}_2=1 \mathrm{mol} {\mathrm{H}}_2=22.4\mathrm{L}$ of volume at STP