A nucleus of the nitrogen isotope, N, captures a neutron. It then changes into a carbon isotope, C, and gives out $x$. $^{{1}}_{{0}}\text{n} + ^{{14}}_{{7}}\text{N} \rightarrow ^{{14}}_{{6}}\text{C} + x$. What is $x$?
- A$\alpha$-particle
- B$\beta$-particle
- C$\gamma$-radiation
- Dproton