What is the product when But-2-en-1-ol gets oxidised by PCC?

#1

CH3-CH=CH-CH2-OH is the reactant and PCC i.e Pyridinium Chloro Chromate is the reagent. What will be the product?

#2

Pcc is a mild oxidising agent and does not oxidise double bonds
Product should be crotonaldehyde

#4