The correct answer is D. All of the above.
Lumbini (Nepal) is the birthplace of Gautama Buddha, the founder of Buddhism. Bodh Gaya (Bihar) is the place where Buddha attained enlightenment under the Bodhi tree. Kusinagara (UP) is the place where Buddha attained Nirvana, or final liberation from suffering. These three places are considered to be the most sacred places for Buddhists.
Lumbini is a UNESCO World Heritage Site and is located in the Terai region of Nepal. The site is home to the Maya Devi Temple, which is said to be the birthplace of Buddha. The temple is a popular pilgrimage destination for Buddhists from all over the world.
Bodh Gaya is located in the state of Bihar in India. The site is home to the Mahabodhi Temple, which is said to be the place where Buddha attained enlightenment. The temple is a UNESCO World Heritage Site and is one of the most important pilgrimage destinations for Buddhists.
Kusinagara is located in the state of Uttar Pradesh in India. The site is home to the Mahaparinirvana Temple, which is said to be the place where Buddha attained Nirvana. The temple is a popular pilgrimage destination for Buddhists from all over the world.