Indicate which of the highlighted groups are homotopic (H), enantiotopic (E), or diastereotopic (D) The image displays five different chemical structures. Each structure highlights specific hydrogen atoms in circles.1. **Top Left Structure**: A bicyclic compound with an amine group (NH) and a carboxylic acid group (COOH). Two hydrogen atoms on one of the rings are circled.2. **Top Right Structure**: A biphenyl compound with methoxy (MeO) and ethoxy (OEt) groups attached. Each aromatic ring has one hydrogen atom circled.3. **Bottom Left Structure**: An ethyl group with two hydrogen atoms circled.4. **Bottom Center Structure**: A chain with a methyl group (H₃C) and a deuterated methyl group (CD₃) attached to a central carbon. Two hydrogen atoms on the central carbon are circled.5. **Bottom Right Structure**: A propyl group with two hydrogen atoms on the central carbon circled. These illustrations are commonly used to highlight specific hydrogen atoms in stereochemical or NMR (Nuclear Magnetic Resonance) studies.

Given Five molecules whose protons are to be distinguished as homotopic, enantiotopic and diastereotopic.Answer Homotopic - Protons that will not generate any chiral centre after exchange with deuterium Enantiotopic- Protons that will generate chiral centre after exchange with deuterium. Further, the resulting isomers will have mirror image relationships Diastereotopic- Protons that will generate chiral centre after exchange with deuterium. Further, the resulting isomers will not have mirror image relationships. None of the given structure is diastereotopic.