In the given question, a statement of Assertion is followed by a statement of Reason. Mark the correct answer.

Assertion: Mesopotamian texts datable to the third millennium BCE refer to copper coming from a region called Magan.

Reason: Magan could be a name for Oman as enough copper found at Mesopotamian sites also contains nickel.

Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

Mesopotamian texts datable to the third millennium BCE refer to copper coming from a region called Magan, perhaps a name for Oman, and interestingly enough copper found at Mesopotamian sites also contains traces of nickel.