Which of the following statements about 'Mughal Mansab' system are correct?
1. "Zat' rank was an indicator of a Mansabdar's position in the imperial hierarchy and the salary of the Mansabdar.
2. 'Sawar' rank indicated the number of horsemen the Mansabdar was required to maintain.
3. In the seventeenth century, Mansabdars holding 1000 or above 'Sawar' rank were designated as nobles (Umara).
Select the correct answer using the code given below.

Options

A. 1 and 2 only
B. 1 and 3 only
C. 2 and 3 only
D. 1, 2 and 3