o assemble a chair the following parts are required. The following table shows the information about the package of the different parts. Part name Qty per unit Supplier Zone Pack qty L W H Crossbar 4 supplier A North Sydney 30 600 400 320 Front leg 2 supplier B North Sydney 25 1000 800 1000 Seat 1 supplier C Dartmouth 12 2000 1200 1850 Side rail 2 supplier D Dartmouth 20 900 1100 950 Back support 3 supplier E Sydney river 35 2000 1130 700 If the demand for May is 3000 chairs, how many side rail is required to pick up while 2200 side rail is available in stock? A. 3500 B. 3800 C. 3600 D. 3700