The sum of the largest number and the smallest number of a triple of positive integers (x,y,z) is called to be the power of the triple. What is the sum of powers of all triples (x,y,z) where x,y,z≤9?<spanclass=′latex−bold′>(A)</span>9000<spanclass=′latex−bold′>(B)</span>8460<spanclass=′latex−bold′>(C)</span>7290<spanclass=′latex−bold′>(D)</span>6150<spanclass=′latex−bold′>(E)</span>6000