Last year, Walsh Company manufactured 25,000 units and sold 22,000 units. Production costs were as follows: Direct Materials - $100,000, Direct Labour $75,000, Variable Manufacturing Overhead - $50,000, Fixed Manufacturing Overhead -$75,000. Total sales were $440,000, total variable selling and administrative expenses were $110,000, and total fixed selling and administrative expenses were $45,000. There was no beginning inventory. Assume that direct labour is a variable cost. What was the operating income under variable costing? OA) $2,000. B) $9,000. C) $12,000 D) $21,000