Consider the differential equation =y-. Use Euler's method with step size Az = 0.5 to estimate y(1), where y = y(«) is the solution of the differential equation satisfying y(-1) = -0.5,

A. y(1) = -0.25
B. y(1) = -0.5
C. y(1) = -0.531
D. y(1) = -0.1875