Assertion (A) : Half life of a radioactive isotope is the time required to decrease its mass number by half
Reason (R ) : Half life of radioactive isotope is independent of the initial amount of the isotope

Options

A. 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 incorrect
D. If both (A) and (R ) are incorrect.

Answer

c

Explanation

`N//A`