Please help me with this question as soon as possible. Thank you so much! Question 1:

Assume the world market for oil is competitive and that the marginal cost of producing (extracting and bringing to market) another barrel of oil is $79.80 and the marginal benefit is $81.80. If one more barrel of oil is produced and consumed, how will economic surplus change? Economic surplus will O A. decrease by $2.00. O B. not change. O C. decrease by $161.60. O D. increase by $81.80. O E. increase by $2.00.On the diagram to the right, a movement from A to B represents a A. change in supply. 51 B. decrease in supply. C. change in quantity supplied. O D. movement down the supply curve. B C Price (dollars per units) Quantity (millions of units per month)