Assertion U-235 is unstable isotope of uranium. Unergo `alpha-`decay.
Reason `alpha-`decay is observed with all radioactive isotopes having atomic number greater than 82.
A. Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion
C. Assertion is correct but Reason is incorrect
D. Assertion is incorrect but Reason is correct