Rank the Following Conjugate Bases in Order of Decreasing Basicity

Multiple Choice

Rank the following conjugate bases in order of decreasing basicity, putting the most basic first. $$\begin{array} {llll}\mathrm { H } _ { 2 } \mathrm { C } = ^\Theta { \mathrm { CH } }&\mathrm { HC} \equiv \mathrm {^\Theta C }&^\Theta _ { \mathrm { CH } _ { 3 } }\\\text { I }&\text { II } &\text { III } \\ \end{array}$$

A) II > I > III
B) I > II > III
C) III > I > II
D) III > II > I