Whichof the following compoundsshall not produce propene by reaction with HBr followedby elimination(or) only direct elimination reaction?

Whichof the following compoundsshall not produce propene by reaction w

1.	Whichof the following compoundsshall not produce propene by reaction with HBr followedby elimination(or) only direct elimination reaction?
Answer» `CH_(3)-CH_(2)-CH_(2)-OH` `H_(2)C=C=O` `CH_(3)-CH_(2)-CH_(2)`Br Answer :c