I cant grasp the concept

Consumer Surplus Marginal Cost Price, Cost, Rever Producer Surplus Quantity of Groceries Now suppose that the independent supermarkets combine into one chain. Use the black point (plus symbol) to show the profit-maximizing monopoly outcome. Then use the green area (triangle symbol) to shade the area representing consumer surplus in the market for groceries, and use the purple area (diamond symbol) to shade the area representing producer surplus. Finally, use the black area (plus symbol) to shade the area representing deadweight loss. ? Monopoly Demand .+ Monopoly Outcome A Consumer Surplus Marginal Cost Price, Cost, Revenue Producer Surplus Deadweight Loss Marginal RevenueWhich of the following statements is true about the changes that occur after the supermarkets merge? Check all that apply. [:1 The market price decreases. C] Consumer surplus falls. C] The market quantity decreases. C] Producer surplus falls. C] Total surplus remains unchanged