1 consider the following algorithm Poly Algo Poly Algo(A, x) A = A[O....n] 1 Ans = 0 2 y = 1 3 for i=0 ton 4 { 5 Ans = Ans + a; .y 6 y = y. 7 } 8 return Ans (a) execute the PolyAlgo with A = (2, 1,4,0,1) = A[O...4) and x = 3 Show the internal assignments to Ans and y for each iteration (b) what is the loop invariant e property of the loop given in line 3