If the competitive market depicted by the graph achieves equilibrium, consumer surplus plus producer surplus will be equal to: Demand and Supply intersect at P=$4 and Q=1,200. At P=$6, QD=600. At P=$2, QS=600. Y-intercept of demand curve is $8. Y-intercept of supply curve is $0. a $2,400. b $4,800. c $7,200. d $9,600.