How many natural number triples (x,y,z) are there such that xyz=106?<spanclass=′latex−bold′>(A)</span> 568<spanclass=′latex−bold′>(B)</span> 784<spanclass=′latex−bold′>(C)</span> 812<spanclass=′latex−bold′>(D)</span> 816<spanclass=′latex−bold′>(E)</span> 824 countingdistinguishability