If variable manufacturing costs are $$9$ per unit and total fixed manufacturing costs are $$235,200,$ what is the manufacturing cost per unit if

a$.4,200$ units are manufactured and the company uses the variable costing concept?

$

b$.5,600$ units are manufactured and the company uses the variable costing concept?

$$

c$.4,200$ units are manufactured and the company uses the absorption costing concept?

$ $$

d$.5,600$ units are manufactured and the company uses the absorption costing concept?

$ $$