The periodic table consists of 18 groups. An isotope of copper on bombardment with protons undergoes a nuclear reaction yielding element 'x' as shown below. To which group, the element X-belongs in the period table<br>$${}^{63}_{29}\text{Cu} + {}^{1}_{1}\text{H} \rightarrow 6\,{}^{1}_{0}n + \alpha + 2\,{}^{1}_{1}\text{H} + X$$

A

$$10^{\text{th}}$$ group

B

$$18^{\text{th}}$$ group

C

$$8^{\text{th}}$$ group

D

$$11^{\text{th}}$$ group