Last year, Walsh Company manufactured 25,000 units and sold 22.000 units Production costs were as follow Direct materials $100,000 Direct labour Variable manufacturing overhead Fbced manufacturing overhead 75.000 50.000 75,000 Total sales were $440,000, total variable selling and administrative expenses were 5110,000, and total fixed selling and noministrative expenses were 545,000 There was no beginning inventory. Assume that direct labour is a variable cost. What was the operating income under variable costing? Select one: O a $2,000 Ob 512,000 O c. $21,000 O d. 59,000