Arrange the following compounds in increasing order of their reactivity in nucleophilic addition reactions.
(i) Ethanal, Propanal, Propanone, Butanone.
(ii) Benzaldehyde, p-Tolualdehyde, p-Nitrobenzaldehyde, Acetophenone.
Hint: Consider steric effect and electronic effect.
A. `IltIIltIIIltIV`
B. `IVltIIIltIIltI`
C. `IIIltIIltIltIV`
D. `IIltIltIIIltIV`