Which of the following does not give an Aldol condensation reaction?

Product $(B)$ in this reaction is

The major product of the following reaction is:

The product formed in Aldol condensation is

Arrange the following compounds in decreasing order of reactivity towards nucleophilic addition reaction:
$I: HCHO$
$II: CH_3CHO$
$III: CH_3COCH_3$
$IV: PhCOCH_3$

Write about the Wolff-Kishner reduction reaction. Or,write the reduction reaction of aldehydes and ketones by the Wolff-Kishner reduction reaction.