The correct option is D All of the above
Among those who were most critical of the existing social order and made a strong plea for Hindu-Muslim unity, the names of Kabir and Nanak stand out. Kabir strongly denounced the Idol-worship, pilgrimages, bathing in the holy rivers or taking part in formal worship, such as Namaz. He was opposed to all kinds of discrimination between human beings. He worshipped the Nirguna form of God whom he calls by several names such as Rama, Allah, Hari, Sain, Sahib, etc. So all the statements are true about Kabir.