IUPAC name of a substituted benzaldehyde or benzoic acid from its structure

1. A.
   3-Carboxy-5-ethylphenol
2. B.
   5-Carboxy-3-ethylphenol
3. C.
   3-Ethyl-5-hydroxybenzoic acid
4. D.
   5-Ethyl-3-hydroxybenzoic acid

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1. A.
   3-Carboxy-6-methylphenol
2. B.
   5-Carboxy-2-methylphenol
3. C.
   3-Hydroxy-4-methylbenzoic acid
4. D.
   4-methyl-5-hydroxybenzoic acid

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1. A.
   3-formyl-5-methylphenol
2. B.
   5-formyl-3-methylphenol
3. C.
   3-hydroxy-5-methylbenzaldehyde
4. D.
   5-hydroxy-3-methylbenzaldehyde

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1. A.
   3-Formyl-5-methylphenol
2. B.
   5-Formyl-3-methylphenol
3. C.
   3-Hydroxy-5-methylbenzaldehyde
4. D.
   5-Hydroxy-3-methylbenzaldehyde

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1. A.
   3-Carboxy-4-methylbenzaldehyde
2. B.
   5-Carboxy-4-methylbenzaldehyde
3. C.
   3-Formyl-6-methylbenzoic acid
4. D.
   5-Formyl-2-methylbenzoic acid

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1. A.
   Benzoic acid
2. B.
   2-Methylbenzoic acid
3. C.
   o-Toluic acid
4. D.
   2-Methylcyclohexylcarboxylic acid

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