The level of inventory of a manufactured product has increased by 7,611 units during a period. The following data ace also available: Variable Fixed Unit manufacturing costs of the period $12 $3 Unit operating expenses of the period $1 $5 What would be the effect on income from operations if variable costing is used rather than absorption costing? Oa. $22,833 increase Ob. $22,833 decrease Oc. $60,888 decrease Od. $60,888 increase