Use Euler's method with a step size of 0.2 to estimate the value of y(1), where y(x) is the solution of the initial-value problem y'' = 3x + y2 and y(0) = -1. Which of the following options correctly represents the estimated value of y(1)?

A) 2.7182
B) 3.1415
C) -0.6931
D) 1.6180