With reference to the Mughal Administration, consider the following statements:

1. The state had four main departments and the four main officers of the central government were Diwan; Mir Bakshi; Mir saman; and Sadr.

2. The diwan (also called the Wazir or chief minister), held the primary position among them and looked after revenue and finance.

3. Mir Bakshi handled the military pay and accounts and related duties. 

Which of the above statement is/are correct?