What is the decreasing order of strength of the bases \[O{{H}^{-}},NH_ – McqOptions

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1.	What is the decreasing order of strength of the bases \[O{{H}^{-}},NH_{2}^{-},HC\equiv {{C}^{-}}~\] and \[C{{H}_{3}}CH_{2}^{-}\]?
A.	\[C{{H}_{3}}CH_{2}^{-}>NH_{2}^{-}>HC\equiv {{C}^{-}}>O{{H}^{-}}\]
B.	\[HC\equiv {{C}^{-}}>C{{H}_{3}}C{{H}_{2}}>NH_{2}^{-}>O{{H}^{-}}\]
C.	\[O{{H}^{-}}>NH_{2}^{-}>HC\equiv C{{~}^{-}}>C{{H}_{3}}CH_{2}^{-}\]
D.	\[NH_{2}^{-}>HC\equiv C{{~}^{-}}>O{{H}^{-}}>C{{H}_{3}}CH_{2}^{-}\]
Answer» B. \[HC\equiv {{C}^{-}}>C{{H}_{3}}C{{H}_{2}}>NH_{2}^{-}>O{{H}^{-}}\]

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