The accompanying graph shows a perfectly competitive market. Suppose that the perfectly competitive market MC, S= MCD with no government intervention achieves equilibrium at point A If the social marginal costs and social marginal benefits MC2 are represented by MC, and MBo, respectively, then the F. competitive equilibrium quantity is B Price O A. consistent with allocation efficiency D OB. too high for allocation efficiency. Pd O C. not enough information to determine allocation C efficiency MB 1 O D. to low for allocation efficiency D =MBo Quantity