I need help with this question please

Question 12 (1 point) The following data are for a series of increasingly extensive flood control projects: Total Cost Total Benefit Per Year Per Year Plan A= Levees $10,000 $16,000 2 Plan B = Small Reservoir 24,000 36,000 Plan C = Medium Reservoir 44,000 52,000 Plan D = Large Reservoir 72,000 64,000 15 Refer to the data. Plan C entails: 18 ( 1) marginal benefits in excess of marginal costs. ( 2) fewer spillovers than either Plan A or Plan B. 3) an overallocation of resources to flood control. ( 4) an underallocation of resources to flood control