What is the sum of real roots of (2+(2+(2+x)2)2)2=2000 ?<spanclass=′latex−bold′>(A)</span> −4<spanclass=′latex−bold′>(B)</span> −2<spanclass=′latex−bold′>(C)</span> 0<spanclass=′latex−bold′>(D)</span> 2<spanclass=′latex−bold′>(E)</span> 4 algebrapolynomialfunction