निम्नलिखित यौगिकों में क्षारकता का बढ़ता क्रम है \((1)\)   \(C{H_3}C{H_2}N{H_2}\)                    \((2)\)   \(\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_2}C{H_3}}\\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,}\\
{\,C{H_3}C{H_2}NH\,\,\,\,\,\,\,}
\end{array}\) \((3)\)   \(\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,C{H_3}}\\
{\,|}\\
{{H_3}C - N - C{H_3}}
\end{array}\)                                \((4)\)     \(\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,C{H_3}}\\
{\,|}\\
{Ph - N - H}
\end{array}\)

1. A \((4) < (3) < (2) < (1)\)
2. B \((4) < (3) < (1) < (2)\)
3. C \((1) < (2) < (3) < (4)\)
4. D \((1) < (2) < (4) < (3)\)