A nuclide of radon-222 is written as $^{222}_{86}\text{Rn}$. In the nucleus of this nuclide, how many protons are present and how many neutrons are present?
- A86 protons, 136 neutrons
- B86 protons, 222 neutrons
- C222 protons, 86 neutrons
- D222 protons, 136 neutrons