Consider the following events in the history of India:
1. Rise of Pratiharas under King Bhoja
2. Establishment of Pallava power under Mahendravarman-j
3. Establishment of Chola Parantaka-I
4. Pala dynasty founded by Gopala
What is the correct chronological order of the above events, starting from the earliest time?
(a) 2-1-4-3
(b) 3-1-4-2
(c) 2-4-1-3
(d) 3-4-1-2