With reference to Indian history, which of the following is/are the essential element/elements of the feudal system?1. A very strong centralized political authority and a very weak provincial or local political authority.2. The emergence of administrative structure based on control and possession of the land.3. Creation of the lord-vassal relationship between the feudal lord and his overload.Select the correct answer using the code given below.

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