Assertion (A) : The average life of a radioactive element is infinity
Reason (R ) : As a radioactive element disinegrates, more of it is formed in nature by itselfa)If both (A) and (R ) are correct, and (R ) is the correct explaination of (A)b)If both (A) and (R ) are correct, but (R ) is not the correct explaination of (A)c)If (A) is correct,but (R ) is incorrectd)If both (A) and (R ) are incorrect.
A. If both (A) and (R ) are correct and (R ) is the correct explanation for (A).
B. If both (A) and (R ) are correct but (R ) is not the correct explanation for (A )
C. If both (A) and (R ) are incorrect.
D. If both (A) and (R ) are incorrect.