In an advanced organic chemistry laboratory, a compound 'R' with the molecular formula C5H10O2 undergoes a series of tests. The first test reveals that 'R' reduces Tollen's reagent, indicating the presence of an aldehyde group. 'R' also reacts with sodium bisulfite (NaHSO3) to form a soluble adduct, further supporting the presence of a carbonyl group. When subjected to hydrogenation using a palladium catalyst, 'R' consumes one mole of hydrogen gas (H2) and yields a compound 'S' with the same molecular formula, C5H10O2, which does not reduce Tollen's reagent. Additionally, 'R' does not react with hydroxylamine (NH2OH), suggesting it does not form an oxime. Based on these observations, what is the most likely structure of compound 'R'?" A. Ethyl propanoate B. Methyl 2-methylpropanoate C. 3-methoxybutanal D. Methyl butanoate . Don't use chat gpt.