The nationalization of banks in India aimed to achieve multiple objectives: removing control by a few private individuals (A is a valid aim), providing adequate credit to priority sectors like agriculture and small industries (C is a valid aim), and encouraging a new class of entrepreneurs (D is a valid aim). 'Provision of control by a few' (B) is the opposite of what nationalization sought - it aimed to reduce concentration of control, not increase it. Therefore, B is the exception.