The correct options are
A Bengali Hindus became a religious minority in East Bengal.
D Restricted the growth of national unity.
Bengali Hindus, who led the political agitation against the British, became a religious minority in East Bengal. Since Hindi and Oriya were the popular languages, Bengali Hindus were a linguistic minority in West Bengal, too. The Bengal partition restricted the growth of national unity in India, and also created unrest within the Nationalists and the Indian National Congress.