Chapter 9.5, Problem 2CP

From left to right, give the hybridization of each carbon atom in the allene molecule $\left({\text{H}}_{\text{2}}{\text{C=C=CH}}_{\text{2}}\right)$.

$\begin{array}{l}\text{a)}\hfill \\ s{p}^2,s{p}^2,s{p}^2\hfill \\ \text{b)}\hfill \\ s{p}^3,s{p}^2,s{p}^3\hfill \\ \text{c)}\hfill \\ s{p}^2,sp,s{p}^2\hfill \\ \text{d)}\hfill \\ s{p}^3,sp,s{p}^3\hfill \\ \begin{array}{l}\text{e)}\\ s{p}^3,s{p}^3,s{p}^3\end{array}\hfill \end{array}$