The arithmetic mean (average) of a set of 50 numbers is 38. If two numbers, namely, 45 and 55, are discarded, the mean of the remaining set of numbers is:
<spanclass=′latex−bold′>(A)</span>36.5<spanclass=′latex−bold′>(B)</span>37<spanclass=′latex−bold′>(C)</span>37.2<spanclass=′latex−bold′>(D)</span>37.5<spanclass=′latex−bold′>(E)</span>37.52