In which of the following , no change in mass number of the daughter nuclie takes place ?
(i) `alpha` decay (ii) `beta` decay
(iii) `gamma` decay (iv) neutron decay

Options

A. (i) is correct
B. (ii) and (iii) are correct
C. (i) and (iv) are correct
D. (ii) and (iv) are correct

Answer

B

Explanation

(ii) and (iii) are correct