Four of the five parts numbered (a), (b), (c), (d) and (e) in the following equation are exactly equal. Which part is not equal to the other four? The number of that part is the answer	Choose the correct option:
A) x(x + y)2 – 2x2y B) x(x + y)2 + 2x2y C) x(x2 – y2) D) x[(x + y)2 – 2xy] E) x[(x + y)2 – 2xy2]
Others are x3 + xy2   Answer x[(x + y)2 – 2xy2]
<result>E</result>
Four of the five parts numbered (a), (b), (c), (d) and (e) in the following equation are exactly equal. Which part is not equal to the other four? The number of that part is the answer