Name the following using the I.U.P.A.C. Nomenclature System:
a. \quad\begin{matrix} \rm Cl\qquad \\ \mid\quad \\ \rm CH_3CHCHCH_2CH_3 \\ \mid\qquad\qquad\quad \\ \rm Cl \qquad\qquad\end{matrix}
b. \quad\begin{matrix} \rm CH_3 \\ \mid\quad \\ \rm CH_3CH_2CCH_2CHCH_3 \\ \mid\quad\qquad\mid \\ \rm CH_3 \qquad CH_3 \end{matrix}
c. \quad\begin{matrix} \qquad\rm CH_3 \qquad CH_3 \\ \qquad\mid\qquad\mid \\ \rm CH_3CH_2CHCHCH_2 \\ \mid \\ \rm CH_3 \end{matrix}
d. \quad\begin{matrix} \rm Br\qquad\qquad\qquad \\ \mid\qquad\qquad\qquad \\ \rm CHCH_2CH_2CH_3 \\ \mid\qquad\qquad\qquad \\ \rm Br \qquad\qquad\qquad\end{matrix}
a. 2,3-Dichloropentane
b. 2,4,4-Trimethylhexane
c. 2,3,4-Trimethylhexane
d. 1,1-Dibromobutane