Which of the following mixtures of water and $$H_2SO_4$$ would have mass percentage of $$H_2SO_4$$ close to 30?

A

30 g $$H_2SO_4$$ and 100 g $$H_2O$$

B

1 mol of $$H_2SO_4$$ and 2 mol of $$H_2O$$

C

1 mol of $$H_2SO_4$$ and 200 g of $$H_2O$$

D

0.30 mol $$H_2SO_4$$ and 0.70 mol $$H_2O$$