really need some help solving. thank you!

A company has established a distribution system for the supply of critical components. Currently there are two origins for these components, which must be shipped to three plants. The current network has the following characteristics: COSTS Plant 1 Plant 2 Plant 3 Supply 400 source 1 $7 $11 $10 source 2 $3 $6 $5 600 Demand 600 450 550 The firm has identified two potential sites for a third component source; these are identified as Source A and Source B. From A, the costs to ship would be $12 to Plant 1, $8 to Plant 2, and $9 to Plant 3. From B, these costs would be $11, $15, and $12. The new source, wherever it is located, will have a capacity of 500 units. Solve with the transportation method. Which site should be selected? a. Is the problem balanced? Select ] If not, which area is short? [ Select] a. What is the cost when evaluating Source A? [ Select] b. What is the cost when evaluating Source B? [Select) c. Which site should be selected? [Select]