A chess club consists of at least 10 and at most 50 members, where G of them are female, and B of them are male with G>B. In a chess tournament, each member plays with any other member exactly one time. At each game, the winner gains 1, the loser gains 0 and both player gains 1/2 point when a tie occurs. At the tournament, it is observed that each member gained exactly half of his/her points from the games played against male members. How many different values can B take?<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>1