Which reaction mixture gives a primary alcohol as the main product?
- Apropanone with $\text{NaBH}_4$
- Bpropene with steam in the presence of $\text{H}_3\text{PO}_4$
- Cbutanoic acid with $\text{LiAlH}_4$
- Dethene with hot concentrated acidified $\text{KMnO}_4$