The $^{68}\text{Ge}$ isotope has medical applications because it naturally decays to form the gallium isotope, $^{68}\text{Ga}$, which is used for detecting tumours. In this conversion of $^{68}\text{Ge}$, an electron is captured by the nucleus, so a proton changes into a neutron. Which statement about the composition of an atom of the $^{68}\text{Ga}$ isotope is correct?
- AIt has 4 electrons in its outer p subshell.
- BIt has 13 electrons in its outer shell.
- CIt has 37 neutrons.
- DIts proton number is 32.