Find the compounds in the place of A, B, C and D. \(C_{2}H_{5}Br \xrightarrow{A} B \xrightarrow{C} C_{2}H_{5}NH_{2} \quad B \xrightarrow{D} C_{2}H_{5}COOH\)
A. \(A=KCN, B=C_{2}H_{5}CN, C=LiAlH_{4}, D=H_{2}O\)
B. \(A=CO_{2}, B=C_{2}H_{5}CN, C=LiAlH_{4}, D=H^{+}/H_{2}O\)
C. \(A=CO_{2}, B=C_{2}H_{5}CO, C=LiAlH_{4}, D=H^{+}/KMnO_{4}\)
