Which of the following is a secondary alkyl halide?
(CH3) [tex]2 \mathrm{CHCH} 2 \mathrm{Cl}[/tex]
(CH3)2CHCH2CCl(CH3)2
(CH3)2CHCHClCH3
[tex](\mathrm{CH} 3) 2 \mathrm{CClCH} 2 \mathrm{CH} 3[/tex]