Identify the final product (z) in the following sequence of reactions
`C_(6)H_(5)COOHunderset((ii)PBr_(3))overset((i)LiAlH_(4))rarrXoverset(KCN)rarrYoverset(LiAlH_(4))rarrZ`

Options

A. `C_(6)H_(5)CH_(2)NH_(2)`
B. `C_(6)H_(5)CH_(2)CH_(2)NH_(2)`
C. `C_(6)H_(5)CH_(2)CH_(2)NH_(2)`
D. `C_(6)H_(5)-underset(CH_(3))underset(|)(CH)-NH_(2)`

Explanation

`C_(6)H_(5)COOHunderset("Reduction")overset(LiAlH_(4))rarrunderset("Benzyl alcohol")(C_(6)H_(5)CH_(2)OH)overset(PBr_(3))rarrunderset(X)(C_(6)H_(5)CH_(2))Broverset(KCN)rarrunderset(Y)(C_(6)H_(5)CH_(2))CNunderset("Reduction")overset(LiAlH_(4))rarrC_(6)H_(5)Cunderset(Z)(H_(2))CH_(2)NH_(2)`