Which one is a nucleophilic substitution reaction among the following ?

Options

A. `CH_(3) CHO + HCN to CH_(3) CH (OH)CN`
B. `CH_(3) - CH = CH_(2) + H_(2) O overset(H^(+))(to) CH_(3) - underset(OH) underset(|)(C )H - CH_(3)`
C. `RCHO + RMgX to R - underset(OH) underset(|)(C ) H - R`
D. `CH_(3) - CH_(2) - overset(CH_(3))overset(|)( C)H- CH_(2) Br + NH_(3) to CH_(3) - CH_(2) overset(CH_(3)) overset(|)( C) H - CH_(2) NH_(2)`

Answer

D

Explanation

Nucleophilic substitution

(a) Nucleophilic addition (b) Electrophilic addition (c) Nucleophilic addition