The correct answer is A. Prithviraj-III.
Prithviraj-III was the ruler of Haryana and Delhi at the time of the invasion of Ghori. He was a Rajput king who ruled from 1177 to 1192. He was a brave and skilled warrior who fought against the invading Muslim armies. He was defeated and killed by Muhammad Ghori in the Battle of Tarain in 1192.
Arnoraj was the son of Prithviraj-III. He ruled for a short period of time after the death of his father. He was defeated and killed by Muhammad Ghori in 1193.
Vigraharaja-IV was the son of Arnoraj. He ruled for a short period of time after the death of his father. He was defeated and killed by Muhammad Ghori in 1194.
The invasion of Ghori was a major turning point in the history of India. It led to the decline of the Rajput power and the rise of the Muslim power in India.