How many sequences of 0s and 1s of length 19 are there that begin with a 0, end with a 0, contain no two consecutive 0s, and contain no three consecutive 1s?<spanclass=′latex−bold′>(A)</span>55<spanclass=′latex−bold′>(B)</span>60<spanclass=′latex−bold′>(C)</span>65<spanclass=′latex−bold′>(D)</span>70<spanclass=′latex−bold′>(E)</span>75