Find the compounds in the place of \( \mathrm{A}, \mathrm{B}, \mathrm{C} \) and D .

A \( \mathrm{A}=\mathrm{KCN}, \mathrm{B}=\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{CN}, \mathrm{C}=\mathrm{LiAlH}_{4}, \mathrm{D}=\mathrm{H}_{2} \mathrm{O} \)

B \( \begin{array}{l} \mathrm{A}=\mathrm{CO}_{2}, \mathrm{~B}=\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{CN}, \mathrm{C}=\mathrm{LiAlH}_{4},\\ \mathrm{D}=\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O} \end{array} \)

C \( \begin{array}{l} \mathrm{A}=\mathrm{CO}_{2}, \mathrm{~B}=\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{CO}, \\ \mathrm{C}=\mathrm{LiAlH}_{4} \mathrm{D}=\mathrm{H}^{+} / \mathrm{KMnO}_{4} \end{array} \)

D None

Solution

Correct Answer: Option D

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