Assertion: When the radius of a copper wire is doubled, its specific resistance gets increased.
Reason: Specific resistance is independent of cross-section of material used.
(1) If both Assertion and Reason are true and Reason is correct explanation of Assertion.
(2) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
(3) If Assertion is true but Reason is false.
(4) If Assertion is false but Reason is true.
