A)
B)
C)
D)
Correct Answer: D
Solution :
[d] [a] \[Ph-C{{H}_{2}}-Br\xrightarrow{KCN}\] \[Ph-C{{H}_{2}}-C\equiv N\xrightarrow{{{H}_{3}}{{O}^{+}}}Ph-C{{H}_{2}}-C{{O}_{2}}H(B)\]
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