Which one of the following, if true, would cast the most doubt on Rubinstein's argument concerning wealth and the official governing elite in nineteenth-century Britain? A. Entry into this elite was more dependent on university attendance than on religious background. B. Attendance at a prestigious university was probably more crucial than a certain minimum family income in gaining entry into this elite. C. Bishops as a group were somewhat wealthier, at the point of entry into this elite, than were higher civil servants or chairmen of manufacturing companies. D. The families of many members of this elite owned few, if any, shares in iron industries and textile industries in the north of England. E. The composition of this elite included vice-chancellors, many of whom held office because of their wealth.