Given below are two statements, one labeled as Assertion (A) and the other as Reason (R). **Assertion (A):** The Khetri copper belt in Rajasthan has been mined since ancient times, dating back to the Harappan civilization. **Reason (R):** The copper deposits in Khetri are hosted in the carbonaceous phyllites and quartzites of the Delhi Supergroup, which made shallow mining technologically feasible even with primitive tools. In the context of the above statements, which of the following is correct?

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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