The isotope $^{68}\text{Ge}$ has medical applications because it decays naturally to produce an isotope of another element, $^{68}\text{X}$, which can be used to detect tumours. This change in $^{68}\text{Ge}$ happens when an electron is taken into the nucleus and converts a proton into a neutron. Which statement correctly describes the composition of an atom of $^{68}\text{X}$?
- AIt has 4 electrons in its outer $p$ orbitals.
- BIt has 13 electrons in its outer shell.
- CIt has 37 neutrons.
- DIts proton number is 32.