Match the following.
| Set – I | Set – II |
| P) Atomic number (Z) | S) No. of protons |
| Q) Atomic mass number | T) A – Z |
| R) Number of neutrons (n) | U) No. of protons + no.of neutrons. |
A) P – U, Q – S, R -T
B) P – T, Q – S, R – U
C) P – S, Q -T, R – U
D) P – S, Q – U, R – T