Assertion: Carboxylic acids do not show the properties of a carbonyl. The CO group in the carboxyl group is in resonance with the OH group. Which of the following options correctly explains the given assertion?
1) Carboxylic acids do not have a carbonyl group.
2) Carboxylic acids have a carbonyl group but it is not involved in resonance.
3) Carboxylic acids have a carbonyl group that is involved in resonance.
4) Carboxylic acids have a carbonyl group that is involved in hydrogen bonding.
