Which of the following assertions are correct? (i) A neutron can decay to a proton only inside a nucleus (ii) A proton can change to a neutron only inside a nucleus (iii) An isolated neutron can change into a proton (iv) An isolated proton can change into a neutron
A
A neutron can decay to a proton only inside a nucleus.
B
A proton can change to a neutron only inside a nucleus.