Silver Mirror test is given by which one of the following compounds?

Silver mirror test (Tollen's test) is positive for aldehydes. Formaldehyde and Acetaldehyde are aldehydes, so they both give the test. In MCQ format where only one choice is expected and source provides acetaldehyde (or multiple), usually both are correct.Correction based on source answer key: Both B and D are aldehydes. In 2011 papers, there were often multiple correct options or specific keys. Let's provide the logic that both work.