Why did Buddhism start declining in India ?
1. Buddha was by that time considered as one of the incarnations of Vishnu and thus became a [art pf Vaishnavism.
2. The invading tribes from Central Asia till the time of last Gupta king adopted Hinduism and persecuted Buddhists.
3. The King of Gupta dynasty were strongly opposed to Buddhism.
Which of the statement(s) above is / are correct ?