Acid-catalyzed ester hydrolysis Steps:

• Recognize that boiling the ester with aqueous HCl performs acid hydrolysis, cleaving the C-O bond to form a carboxylic acid and an alcohol.
• Parse the ester formula CH3COOCH2CH3: the acyl group CH3COO- corresponds to ethanoic acid (CH3COOH).
• The alkoxy group -OCH2CH3 corresponds to ethanol (CH3CH2OH).
• Products are ethanoic acid and ethanol; choices do not match these.

Why B is correct:

• Not applicable; options misalign with formula.

Why the others are wrong:

• A: Identical to B, but products do not match ester structure.
• C: Propan-1-ol (C3 alcohol) and propanoic acid (C3 acid) imply C6 ester, not C4 given.
• D: Propan-2-ol is branched, unlike linear -CH2CH3 in ester.

Final answer: Not enough information.