Which of the following equations has integer solutions (x,y,z)(x, y, z)(x,y,z)?
x2+y2=4z+2x^2 + y^2 = 4z + 2x2+y2=4z+2
x2+y2=4z+3x^2 + y^2 = 4z + 3x2+y2=4z+3
x2+y2=8z+6x^2 + y^2 = 8z + 6x2+y2=8z+6
x2+y2=5z+1x^2 + y^2 = 5z + 1x2+y2=5z+1