The ultimate analysis of a petroleum fuel is $87\mathrm{.}1\%$ carbon and $12\mathrm{.}9\%$ hydrogen. A certain test of dry products of combustion gives the following analysis by volume. $12\%C{O}_2$;$0\mathrm{.}30\%CO$;$4\mathrm{.}8\%O_2$;$83\mathrm{.}1\%N_2.$ Calculate the number of atoms of carbon and hydrogen of the hydrocarbon fuel.

A$.n=7\mathrm{.}26,m=12\mathrm{.}90$

C$.n=8\mathrm{.}26,m=13\mathrm{.}9$

B$.n=8\mathrm{.}26,m=7\mathrm{.}26$

D$.n=13\mathrm{.}90,m=8\mathrm{.}26$