Alkyl halides react with di-alkyl copper reagents to give

Alkanes are produced when dialkyl copper reagents and alkyl halides react. The process is referred as as Corey House synthesis.$\mathrm{RX}+{\mathrm{R}}_2^{\mathrm{\prime }}\mathrm{CuLi}\to \mathrm{R}-{\mathrm{R}}^{\mathrm{\prime }}+{\mathrm{R}}^{\mathrm{\prime }}-\mathrm{Cu}+\mathrm{LiX}$.

For instance, butane is produced when ethyl iodide and lithium diethyl cuprate combine.

${\left({\mathrm{C}}_2{\mathrm{H}}_5\right)}_2\mathrm{CuLi}+{\mathrm{C}}_2{\mathrm{H}}_5-\mathrm{I}\to {\mathrm{C}}_2{\mathrm{H}}_5-{\mathrm{C}}_2{\mathrm{H}}_5+{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Cu}+\mathrm{LiI}$

Hence, option A is correct.