Al, Betty, and Clare split $1000 among them to be invested in different ways. Each begins with a different amount. At the end of one year they have a total of $1500. Betty and Clare have both doubled their money, whereas Al has managed to lose $100. What was Al’s original portion?
<spanclass=′latex−bold′>(A)</span>$250<spanclass=′latex−bold′>(B)</span>$350<spanclass=′latex−bold′>(C)</span>$400<spanclass=′latex−bold′>(D)</span>$450<spanclass=′latex−bold′>(E)</span>$500