Given below are four statements regarding the chemical properties of aldehydes, ketones, and carboxylic acids: Statement I: Gattermann-Koch reaction converts benzene to benzaldehyde using carbon monoxide and hydrogen chloride in the presence of anhydrous aluminium chloride. Statement II: The haloform reaction is given by all aliphatic aldehydes and ketones. Statement III: The Hell-Volhard-Zelinsky reaction is used to

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Statement I is correct: Benzene is treated with CO and HCl in the presence of anhydrous AlCl ₃ or CuCl to give benzaldehyde (Gattermann-Koch reaction). Statement II is incorrect: The haloform reaction is only given by aldehydes and ketones having at least one methyl group linked to the carbonyl carbon atom (i.e., methyl ketones and acetaldehyde). Statement III is correct: Carboxylic acids having an -hydrogen are halogenated at the -position on treatment with chlorine or bromine in the presence of a small amount of