If s denotes the surface of the sphere r = (a sine cosp, a sine sinp, a cos0), where 0 s 0s 0 sos 27, evaluate(x+y jds. (a) 1 (b) -1 (c) 1/2 (d) 0

If S denotes the surface of the sphere r = (a sine cosp, a sine sinp, a cos0), where 0 s 0s 0 sos 27, Evaluate(x+y jds. (A) 1 (B) -1 (C) 1/2 (D) 0