Duration: 4:36

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The correct order of increasing basicity of the given conjugate bases \( \left(\mathrm{R}=\mathrm{CH}_{3}\right) \) is
(A) \( \mathrm{RCOO}^{-}\mathrm{HC} \equiv \mathrm{C}^{-}\mathrm{NH}_{2}^{-}\mathrm{R}^{-} \)
(B) \( \mathrm{RCOO}^{-}\mathrm{HC} \equiv \mathrm{C}^{-}\mathrm{R}^{-}\mathrm{NH}_{2}^{-} \)
(C) \( \mathrm{R}^{-}\mathrm{HC} \equiv \mathrm{C}^{-}\mathrm{RCOO}^{-}\mathrm{NH}_{2}^{-} \)
(D) \( \mathrm{RCOO}^{-}\mathrm{NH}_{2}^{-}\mathrm{HC} \equiv \mathrm{C}^{-}\mathrm{R}^{-} \)
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