[单选题]【阅读选择】For any given task in Britain there are more men than are needed. Strong unions keep them there. In Fleet Street, home of some of London's biggest dailies, it is understood that when two unions quarrel over three jobs the argument is settled by giving each union two. That means 33 per cent over manning, 33 per cent less productivity than could be obtained.What happens when disputes over job opportunities arise among British unions? A Thirty three per cent of the workers will be out of work. B More jobs will be created by the union. C More people will be employed than necessary. D The unions will try to increase productivity. E F