To answer this question, we need to understand the context of the yagna performed by Yudhishthira after the battle of Kurukshetra.
Option A) Ashwamedha - This option is incorrect. The Ashwamedha yagna is a different ritual performed by kings to demonstrate their power and authority. It involves the sacrifice of a horse and is usually performed to assert dominance over a vast territory.
Option B) Maharudra - This option is incorrect. The Maharudra yagna is a complex and elaborate ritual performed to worship Lord Shiva. It involves the chanting of Rudra mantras and the offering of various items to Lord Shiva.
Option C) Rajasuya - This option is incorrect. The Rajasuya yagna is a grand ritual performed by kings to assert their sovereignty and gain recognition as the emperor. It involves various rituals, offerings, and ceremonies to honor deities and guests.
Option D) None - This option is incorrect. Yudhishthira did perform a yagna after the battle of Kurukshetra.
The correct answer is A) Ashwamedha. Yudhishthira performed the Ashwamedha yagna after the battle of Kurukshetra to assert his authority as a king and establish his rule over the conquered territories.