Mallard Corporation uses the product cost method of product pricing. Below is cost information for the production and sale of $45,000$ units of its sole product. Mallard desires a profit equal to a $12\%$ returh on invested assets of $$800,000.$

Fixed factory overhead cost

$$82,000$

Fixed selling and administrative costs

$45,000$

Variable direct materials cost per unit

$5\mathrm{.}50$

Variable direct labor cost per unit

$7\mathrm{.}65$

Variable factory overhead cost per unit

$2\mathrm{.}25$

Variable selling and administrative cost per unit

$0\mathrm{.}90$

The markup percentage on product cost for the company's product is

$x$ a$.26\mathrm{.}1\%$

$$ b$.10\mathrm{.}9\%$

c$.18\mathrm{.}0\%$

d$.23\mathrm{.}4\%$