Concept:The Karmanasa River, a tributary of the Ganga, originates from the Kaimur Hills in Bihar.
Explanation:The Karmanasa River rises near Sarodag in the Kaimur district of Bihar.
Its source lies in the Kaimur Hills, which are part of the Vindhya Range.
The river then flows along the border of Bihar and Uttar Pradesh.
It joins the Ganga River near Chausa in Buxar district, Bihar.
The name Karmanasa means "destroyer of religious merit" in Sanskrit.
The river also forms a natural boundary between Bihar and Uttar Pradesh at several points.
Answer:Option B: Kaimur District