With reference to the religious history of India, consider the following statements: (2016)

1. The concept of Bodhisattva is central to the Hinayana sect of Buddhism.
2. Bodhisattva is a compassionate one on his way to enlightenment.
3/ Bodhisattva delays achieving his own salvation to help all sentient beings on their path to it.

Which of the statements given above is/are correct?