With reference to the Bharatiya Janata Party (BJP), which of the following statements is not correct?
1
As a key member of the National Democratic Alliance (NDA), the BJP has been leading the central government since 2014.
2
Atal Bihari Vajpayee was its first president.
3
BJP was formed in 1990.
4
Its roots go back to the Bharatiya Jana Sangh.