Concept: Oxidation of alkanols depends on the number of alkyl groups attached to the carbon bearing the hydroxyl group.Explanation:Primary alkanols oxidize first to aldehydes and then to alkanoic acids.Secondary alkanols oxidize to ketones, not alkanoic acids.Tertiary alkanols do not readily undergo oxidation because their hydroxyl carbon has no hydrogen atom.Therefore, only primary alkanols produce alkanoic acids on oxidation.Answer: D. I only