The consulting agency has been tracking the cost of water and sewer services provided to residents in an area. They found when the price for water and sewer services was $70 per month to these residential customers, demand for water was 60 gallons per day. When they priced the water and sewer services higher at $80 per month, their residential customers reduced demand to 55 gallons per day. What is the price elasticity for the water and sewer services? O-0.58 O-1.71 O-0.33 O-0.67