When monthly production volume and sales are the same, Oa. absorption income equals variable income Ob. absorption income is greater than variable income Oc. the cost of goods sold equals miscellaneous expenses Od. the cost of goods sold is greater than miscellaneous expenses The scatter-graph method Oa. only uses two data points. Ob. allows a cost analyst to inspect data visually. Oc. is objective. Od. None of these choices are correct