Determine the value of kkk such that x2+y2=z2x^2 + y^2 = z^2x2+y2=z2 has primitive solutions where z=5z=5z=5.
x=3,y=4x=3, y=4x=3,y=4
x=4,y=3x=4, y=3x=4,y=3
x=1,y=2x=1, y=2x=1,y=2
x=2,y=2x=2, y=2x=2,y=2