Output	AFC	AVC	ATC	MC
1	$300	$100	$400	$100
2	150	75	225	50
3	100	70	170	60
4	75	73	148	80
5	60	80	140	110
6	50	90	140	140
7	43	103	146	180
8	38	119	156	230
9	33	138	171	290
10	30	160	190	360

The accompanying table shows cost data for a firm that is selling in a purely competitive market. If the product price is $290, the per-unit economic profit at the profit-maximizing output is

		$0.
		$119.
		$152.
		$76.