Khi cho 2,2-dimethylbutane tác dụng với chlorine thu được tối đa bao nhiêu dẫn xuất monochloro?

Đáp án đúng là: A

$\begin{array}{l}{\mathrm{CH}}_3-\begin{array}{c}{\mathrm{CH}}_3\\ \underset{\left|\right.}{\overset{\left|\right.}{\mathrm{C}}}\\ {\mathrm{CH}}_3\end{array}-{\mathrm{CH}}_2-\mathrm{C}{\mathrm{H}}_3\underset{-\mathrm{HCl}}{\overset{+{\mathrm{Cl}}_2}{\to }}〈\begin{array}{l}{\mathrm{CH}}_2\mathrm{Cl}-\begin{array}{c}{\mathrm{CH}}_3\\ \underset{\left|\right.}{\overset{\left|\right.}{\mathrm{C}}}\\ {\mathrm{CH}}_3\end{array}-{\mathrm{CH}}_2-{\mathrm{CH}}_3\\ {\mathrm{CH}}_3-\begin{array}{c}{\mathrm{CH}}_3\\ \underset{\left|\right.}{\overset{\left|\right.}{\mathrm{C}}}\\ {\mathrm{CH}}_3\end{array}-{\mathrm{CH}}_2\mathrm{Cl}-{\mathrm{CH}}_3\\ {\mathrm{CH}}_3-\begin{array}{c}{\mathrm{CH}}_3\\ \underset{\left|\right.}{\overset{\left|\right.}{\mathrm{C}}}\\ {\mathrm{CH}}_3\end{array}-{\mathrm{CH}}_2-{\mathrm{CH}}_2\mathrm{Cl}\end{array}\\ \end{array}$