When New York City Needed to Meet National Water Quality

When New York City needed to meet national water quality standards,they chose to invest $1.5 billion in protecting land and upgrading sewage systems in the Catskills (the source of their water) rather than spending $6-$8 billion on a new waste treatment facility in the city.This choice resulted in benefits in both New York City and the Catskills that included all of these except

A) saving money.
B) decreasing pollution.
C) improving water filtration.
D) improving sewage treatment.
E) replacing a natural with a technological system.