Consider the following statements regarding the ancient city of Vaishali: 1. It was an important centre of the Vajji Confederacy. 2. The Second Buddhist Council was held at Vaishali. 3. Gautama Buddha delivered his last sermon at Vaishali. 4. It was associated with the Licchavis. Which of the statements given above are correct?
Correct Answer: Option D
Explanation: The historic Buddhist Councils were convened to codify the Buddha's teachings (Dhamma and Vinaya) under the patronage of ancient Magadhan rulers (Ajatashatru, Kalasoka, Ashoka, and Kanishka).