Assertion (A) : `beta`-particles have greater penetrating power than `alpha`-rays but less than `gamma`-rays
Reason (R ) : `beta`-particles are lighter than `alpha`-rays but heavier than `gamma`-rays

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

a

Explanation

`N//A`