Battery acid $$\mathrm{H_2SO_4}$$ has density $$1.285\ \mathrm{g\,cm^{-3}}$$. $$10.0\ \mathrm{cm^3}$$ of this acid is diluted to $$1\ \mathrm{L}$$. $$25.0\ \mathrm{cm^3}$$ of this diluted solution requires $$25.0\ \mathrm{cm^3}$$ of $$0.1\ \mathrm N$$ sodium hydroxide solution for neutralization. The percentage of sulphuric acid by mass in the battery acid is

A

98

B

38

C

19

D

49