How many positive integers n are there such that there are exactly 20 positive odd integers that are less than n and relatively prime with n?<spanclass=′latex−bold′>(A)</span>5<spanclass=′latex−bold′>(B)</span>4<spanclass=′latex−bold′>(C)</span>3<spanclass=′latex−bold′>(D)</span>2<spanclass=′latex−bold′>(E)</span>None of above