A recent empirical study of the demand for automobiles revealed that the elasticity for a Cadillac Escalade is -4. According to goodcarbadcar.com, 25,600 Cadillac Escalades were sold in 2013 at a price of $64,000. What is the inverse demand curve for a Cadillac Escalade?

P = -0.625Q + 80,000

P = -0.1Q + 66,560

P = -1.6Q + 104,960

P = -0.625 + 65,600

P = -1.6Q + 128,000