Which of the following assertions are correctly matched with the anti-caste social reformer:

A) The 'lower castes' are the true upholders of Dravidian culture: Ghasi das

B) People must not be discriminated on the basis of caste, as all humankind belongs to the same caste: Shri Narayana Guru

C) Shudras and Atishudras should unite to challenge caste discrimination: Jyotirao Phule

Choose the correct option.