Bryce Co$.$ sales are $$830,000,$ variable costs are $$466,600,$ and

operating income is $$291,000.$ The contribution margin ratio isa$\mathrm{.}56\mathrm{.}2\%$b$\mathrm{.}43\mathrm{.}8\%$c$\mathrm{.}39\mathrm{.}5\%$d$\mathrm{.}61\mathrm{.}4\%$