Calculate this line integral by Stokess theorem, clockwise as seen by a person standing at the origin,

Question:

Calculate this line integral by Stokes’s theorem, clockwise as seen by a person standing at the origin, for the following F and C. Assume the Cartesian coordinates to be right-handed. (Show the details).
F = [y, xy3, – zy3], C the circle x2 + y2 = a2, z = b (> 0)