Consider the following substances
(1) HCHO
(2) CH₃CHO
(3) CH₃COCH₃
(4) CH₃COC₂H₅
The correct order of reactivity towards nucleophilic addition reaction is
A) 1>2>3>4
B) 1>3>2>4
C) 1>2>4>3
D) 1>4>2>3