14. [12 Points] Let C be the curve that consists of line segments from P(1, 0, 0) to Q(0, 1, 0), Q to R(0, 0, 2), and from R back to P (note that C is the boundary of a triangle in the plane 2x + 2y + z - 2 = 0). Use Stokes' Theorem to find, but don't evaluate, a double iterated integral in terms of x and y that gives the circulation of the vector field F(x, y, z) = yz i - xz j +2" k = (yz, -xz, 2") around C