Read the following : 

(i) The half-life period of a radioactive element X is same as the mean-life time of another radioactive element Y. Initially both of them have the same number of atoms. Then Y will decay at a faster rate than X.

(ii) The electron emitted in beta radiation originates from decay of a neutron in a nucleus

(iii) The half-life of 215 At is 100 ms. The time taken for the radioacivity of a sample of 215 At to decay to 1116th of its initial value is 400 ms.

(iv) The volume (V) and mass (m) of a nucleus are related as $V\propto m$ 

(v) Given a sample ofRadium-226 having half-life of 4 days. The probability, a nucleus disintegrates within 2 half lives is 3/4.

Select the correct code for above.