Fill in the spaces of this monopolistic competitor

Quantity of Output	Total Cost	Marginal Cost	Average Total Cost	Total Revenue	Marginal Revenue	Average Revenue (Price)
0	0		0	0		0
1	900	900	900	1200	1200	1200
2	1600	700	800	2100	900	1050
3	2100	[?]	700	2700	[?]	900
4	2400	[?]		3000	300	[?]
5	3000	600	[?]	3000	[?]	[?]
6	4200	1200	[?]	2700	-300	[?]

A profit-maximizing monopolist would produce an output of [?] units.
At this level of output, MC is $[?] per unit and MR is $[?] per unit.
At this level of output, the AC is $[?] and the AR (price) is $[?] per unit.
This gives the monopolist an economic profit of $[?] per unit for a total economic profit of $[?]