Consider the following diagram that illustrates a dual-track system in which the planned quantities are efficiently rationed and supplied. Under the fixed plan producers are required to supply 2000 units at a price of $5. Price nationed 20 Dernand Supply = Marginal Cost 15 C 10 5 Planned Dernand = Marginal Supply Willingness to Pay 2000 2500 Quantity What is the amount of surplus transferred to consumers from the producers under the fixed plan? O A. $5,000 B. $10,000 O c. $12,500 O D. $25,000