39. Which one of the following reagents is used in the above reaction?\\
(A) aq. $\mathrm { NaOH } + \mathrm { CH } _ { 3 } \mathrm { Cl }$\\
(B) aq. $\mathrm { NaOH } + \mathrm { CH } _ { 2 } \mathrm { Cl } _ { 2 }$\\
(C) aq. $\mathrm { NaOH } + \mathrm { CHCl } _ { 3 }$\\
(D) aq. $\mathrm { NaOH } + \mathrm { CCl } _ { 4 }$
\section*{Answer}
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(A)\\
(B)\\
(C)\\
(D)\\