Let $X = \{ \alpha \in \mathbb { C } \mid \alpha$ satisfies a monic polynomial over $\mathbb { Q } \}$. (I.e., $X$ is the algebraic closure of $\mathbb { Q }$ in $\mathbb { C }$.) Endow $X$ with the subspace topology of the euclidean metric topology from $\mathbb { C }$. Pick the correct statement(s) from below.\\
(A) $X$ is closed.\\
(B) $X$ is complete.\\
(C) $X$ is unbounded.\\
(D) $X$ is connected.