Consider the following statements in the context of organization of Mughal ruling class during the 17thcentury and select the correct answer from the options given below:

• A. An aspect of the composite ruling class was the steady promotion of a small number of members belonging to the administrative services.
• B. These members were generally drawn from Khatri and Kayastha castes.
• C. A few Brahmins could also be found amongst this ruling class.
• D. All of the above.