Jack's Fireworks, which was established in 2000, changed its method of accounting for inventories from the average cost method to the first-in, first-out (FIFO) method in 2011. Cost of goods sold for the periods 2009-2011 under FIFO and the average cost method were

year	FIFO	AVERAGE COST	DIFFERENCE
2009	$120,000	$110,000	$10,000
2010	140,000	128,000	12,000
2011	150,000	144,000	6,000

Jack's Fireworks is subjects to a 30% income tax rate. In its income statement for the year ended December 31, 2011, Jack's would report the cululative effect of a change in accounting principle, net of income taxes of a. $0, b. $(4,2000) c, $(15,400)