Explanation

 The oxidation of hypo (chlorous acid) to 1-butanone does not give 1-butanol or 2-chloro-1-butanol, so the correct answer is  None of the above. 

Hypochlorous acid (HOCl) is an oxidizing agent , but it does not convert 1-butanone (a ketone) back to an alcohol (1-butanol). 

The reaction of HOCl with 1-butene would result in the addition of chlorine and hydroxyl groups to the double bond, forming 2-chloro-1-butanol, not 1-butanol.