The following schedule summarizes the inventory purchases and sales of Brooks Street Enterprises during January 2009; # of Units Per Unit Cost Per Unit Selling Price BI 400 $40 Jan.2 purchase 200 44 Jan.5 sale 300 $80 Jan.9 purchase 200 48 Jan.14 sale 350 90 Jan.18 purchase 200 50 Jan.21 sale 150 90 Jan.25 purchase 500 52 Jan.31 sale 450 100 (a) Determine Brooks Street