The correct answer is B. Pawapuri.
Pawapuri is a town and a notified area committee in Nalanda district in the Indian state of Bihar. It is located 10 km from Nalanda, 120 km from Patna, and 130 km from Gaya. The town is famous for being the place where Mahavira, the 24th Tirthankara of Jainism, attained Nirvana.
Mahavira was born in Kundagrama (now known as Vaishali) in 599 BCE. He renounced the world at the age of 30 and spent the next 60 years wandering as an ascetic. He attained Nirvana at the age of 72 in Pawapuri.
The Mahavira Nirvana Temple is a Jain temple complex located in Pawapuri. The temple complex is spread over an area of 100 acres and is one of the most important pilgrimage sites for Jains. The temple complex consists of a number of temples, shrines, and other religious structures. The main temple in the complex is the Mahavira Nirvana Temple, which is dedicated to Mahavira. The temple is built in the Nagara style of architecture and is decorated with intricate carvings and sculptures.
The Mahavira Nirvana Temple is a popular tourist destination and is visited by thousands of pilgrims every year. The temple is also a popular spot for meditation and spiritual retreats.