Compound X, $\text{C}_4\text{H}_8\text{O}$, gives an orange precipitate when reacted with 2,4-dinitrophenylhydrazine reagent. When compound X is heated under reflux with acidified potassium dichromate(VI) solution, it forms a carboxylic acid. What might compound X be?
- Abutanal
- Bbutanone
- C2-methylbutanal
- D4-hydroxybut-1-ene