How many 6-digit positive integers whose digits are different from 0 are there such that each number generated by rearranging the digits of the original number is always divisible by 7?<spanclass=′latex−bold′>(A)</span>11<spanclass=′latex−bold′>(B)</span>77<spanclass=′latex−bold′>(C)</span>133<spanclass=′latex−bold′>(D)</span>166<spanclass=′latex−bold′>(E)</span>255