Coal is a common fossil fuel. It contains 0.2 to 5.0 percent sulphur which on burning produces a gas responsible for acid rain. The number of atoms in one mole of this gas is

A

$$6.02 \times 10^{23}$$

B

$$1.81 \times 10^{23}$$

C

$$1.81 \times 10^{24}$$

D

$$1.21 \times 10^{24}$$