Given below are two statements, one labeled as Assertion (A) and the other labeled as Reason (R). **Assertion (A):** The Purusha Sukta of the Rigveda (10th Mandala) is considered a later addition to the original core of the Rigvedic Samhita. **Reason (R):** It introduces a rigid, hereditary four-fold varna hierarchy that is absent in the older family books (Mandalas 2-7), which reflect a more egalitarian pastoral society. Select the correct answer using the code given below:

Options:

• A: Both A and R are true, and R is the correct explanation of A.
• B: Both A and R are true, but R is not the correct explanation of A.
• C: A is true, but R is false.
• D: A is false, but R is true.

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