The correct option is C Uttar Pradesh
The Bahujan Samaj Party is a party formed to represent Bahujans referring to Schedule Castes, Scheduled Tribes, and other backward Castes. It was founded on 14 April 1984. It has its main base in the state of Uttar Pradesh and a substantial presence in neighboring states like Madhya Pradesh, Chhattisgarh, Uttarakhand, Delhi, and Punjab. Formed government in Uttar Pradesh several times by taking the support of different parties at different times.