Which one is a nucleophilic substitution reaction among the following?

Options

A. `CH_(3)-CH_(2)-overset(CH_(3))overset(|)CH-CH_(2)Br+NH_(3)rarrCH_(3)-CH_(2)-overset(CH_(3))overset(|)CH-CH_(2)NH_(2)`
B. `CH_(3)CHO+HCNrarrCH_(3)CH(OH)CN`
C. `CH_(3)-CH-CH_(2)+H_(2)Ooverset(H^(+))rarrCH_(3)-underset(OH)underset(|)CH-CH_(3)`
D. `RCHO+R'MgXrarrR-underset(O)underset(|)CH-R`

Answer

A

Explanation

(A) Nucleophilic substitution
(B) Nucleophilic Addition
(C) Electn1philic Addition
(D) Nucleophilic Addition