How many of the following give red precipitate with ammonical cuprous chloride ?
$\begin{array}{l}\mathrm{A}) \mathrm{CH}\equiv \mathrm{CH}\\ \mathrm{B}) {\mathrm{CH}}_3-\mathrm{C}\equiv \mathrm{C}-{\mathrm{CH}}_3\\ \mathrm{C}) {\mathrm{CH}}_3-\mathrm{C}\equiv \mathrm{CH}\\ \mathrm{D}) {\mathrm{CH}}_2={\mathrm{CH}}_2\end{array}$
E)
F) ${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{C}\equiv \mathrm{CH}$