Consider the following events:

1. The first democratically elected communist party government formed in a State in India.
2. India’s then largest bank, ‘Imperial Bank of India’ was renamed ‘State Bank of India’.
3. Air India was nationalized and became the national carrier.
4. Goa became a part of independent India.

Which of the following is the correct chronological sequence of the above events?

a) 4-1-2-3

b) 3-2-1-4

c) 4-2-1-3

d) 3-1-2-4