But-2-ene reacts with cold dilute acidified KMnO$_4$ to give product X.
But-2-ene reacts with an excess of hot concentrated acidified KMnO$_4$ to give product Y.
Which statement about X and Y is correct?
1 )
Only one of X and Y reacts with 2,4-dinitrophenylhydrazine.
2 )
X and Y both react with sodium hydroxide.
X and Y both react with sodium metal.
4 )
Y reacts with LiAlH$_4$ to give X.
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