Each of the integers a1,a2,a3,…,a2008 is at least 1 and at most 5. If an<an+1, the pair (an,an+1) will be called as an increasing pair. If an>an+1, the pair (an,an+1) will be called as an decreasing pair. If the sequence contains 103 increasing pairs, at least how many decreasing pairs are there?<spanclass=′latex−bold′>(A)</span>21<spanclass=′latex−bold′>(B)</span>24<spanclass=′latex−bold′>(C)</span>36<spanclass=′latex−bold′>(D)</span>102<spanclass=′latex−bold′>(E)</span>None of the above