A mixture of sodium (Na) and potassium (K) metals weighing 32 g was reacted with water and the solution obtained could be neutralized with 517.3 mL of 1.0 M $$\text{H}_2\text{SO}_4$$ (aq). The mass of sodium that was present in the mixture is

A

20 g

B

16 g

C

10 g

D

12 g