Jimbob Co.'s records include the following information for the month of January: Units manufactured 5,000 Units sold 4,000 Selling price per unit $50 Variable manufacturing costs per unit: Direct materials $5 Direct labour $2 Manufacturing overhead $1 Variable selling and administrative expenses per unit sold $1 Total fixed costs: Manufacturing overhead $10,000 Selling and administrative expenses $20,000 There were no beginning inventories. Using variable costing, what is the net income for January?