What is the unit shipping cost from Supply Node C to Demand Node 1?

1) 3

2) 9

3) 4

4) 8

5) 5

6) 1

Variable Cells Name Total Cost 12,600 Final Reduced Objective Allowable Allowable Value Cost Coefficient Increase Decrease 0 0 6 1 E-30 0 0 6 15-30 6 0 0 6 0 2 2200 0 5 3 1500 0 ? 2 1E+30 0 5 S 6 1E+30 5 Cell SCS4 Amount Shipped XA1 SD$4 Amount Shipped XAZ SE$4 Amount Shipped XB1 SF$4 Amount Shipped XB2 SG$4 Amount Shipped XC1 SHS 4 Amount Shipped XC2 Shipping Amount for X Amount Shipped Unit Cost ($/unit) Unit Cost (S/unit) X1 0 0 $6 X2 0 $9 Xci 1,500 X31 0 $6 XB 2,200 $3 Xc 0 $6 3 CA: CA Cc: Cc: Constraints X. XA 1 Xi XcI X. 1 Amount Actually Shipped 0 2,200 1,500 1,500 2,200 1 Amount Available to ship (b) 1.000 2,400 1,500 1,500 2,200 1 Constraints Supply Factory A Supply Factory B Supply Factory C Demand Retail Center 1 Demand/Retail Center 2 Slack 1,000 200 0 0 Final Shadow Constraint Allowable Allowable Value Price R.H. Side Increase Decrease 0 1000 1 E-30 1000 2200 2400 1E+30 200 1500 -2 1500 0 200 1500 6 1500 200 0 2200 3 2200 200 2200 1 1 1 Cell Name $1$9 Supply/Factory A Amount Actually Shipped SI$10 Supply/Factory B Amount Actually Shipped $I$11 Supply/Factory C Amount Actually Shipped $I$12 Demand/Retail Center 1 Amount Actually Shipped SI$13 Demand/Retail Center 2 Amount Actually Shipped 0 0