The bounded solution of Laplace's equation Ur + - Ur + uo0 = 0 outside the circle r = 2 which satisfies the boundary condition u(2, 0) = 4 - 3 sin(20) + 4 cos(30) is ur,0 = Ernan cos(no) + bn sin(no) , where n=1 Oa) an = 4, a3 = -, 62 = -2, an = bn = 0 otherwise Ob) ao = 8, a3 = 4, b2 = -3, an = bn = 0 otherwise O c) None of these O d an = 8, a3 = -, b2 = -2, an = bn =0 otherwise Oe) ao = 8, a3 = 32, b2 = -12, an = bn = 0 otherwise