A combustor currently operates on high$-$sulfur waste coal $($gob coal$).$ To reduce sulfur emissions, some pelletized waste is used to displace $10\%$ by weight of the gob coal. The heating values of pelletized waste and gob coal are $6,550$ Btu $/$ lb and $5,500$ Btu $/$ lb$,$ respectively. To maintain the same heat output, the ratio of pounds of pellets fired to pounds of gob coal fired is most nearly: $($A$)0\mathrm{.}084($B$)0\mathrm{.}093($C$)0\mathrm{.}111($D$)0\mathrm{.}132$