The cost of producing a bottle of Zlurp is $1.50, and the competitive suppliers sell it at this price. (The supply curve is horizontal.) Each Whovillian will consume bottles and receive a consumer surplus of $ . Producing Zlurp creates pollution. Each bottle has an external cost of $1. Taking this additional cost into account, total surplus per person in the allocation you previously determined decreases to $ . Cindy Lou Who, one of the residents of Whoville, decides on her own to reduce her consumption of Zlurp by 1 bottle.